Abstract

A radiation measurement device may be provided. The radiation measurement device may comprise a scattering component and a first detector. The scattering component may be located between a radiation source of an imaging device and the first detector, and configured to scatter first radiation rays emitted by the radiation source into scattering rays. The first detector may be configured to collect first measurement data by detecting at least a portion of the scattering rays, the first measurement data reflecting an operation status of the radiation source.

IPC Classes  ?

• G01T 1/16 - Measuring radiation intensity

Abstract

A method and system for metal artifacts correction are provided. The method may include obtaining an image to be processed including metal portion; determining initial projection data by performing data restoration on the metal portion of the image to be processed; determining target projection data by filtering the initial projection data; and determining a target image based on the target projection data.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation
• G06T 5/00 - Image enhancement or restoration
• G06T 5/20 - Image enhancement or restoration by the use of local operators

Abstract

Systems and methods for motion correction in medical imaging are provided in the present disclosure. The systems may obtain at least two image sequences relating to a subject. Each of the at least two image sequences may be reconstructed based on image data that is acquired by a medical imaging device during one of at least two time periods. The subject may undergo a physiological motion during the at least two time periods. The systems may generate, based on the at least two image sequences, at least one corrected image sequence relating to the subject by correcting, using a motion correction model, an artifact caused by the physiological motion.

IPC Classes  ?

• G06T 5/77 - Retouching; Inpainting; Scratch removal
• G06T 5/50 - Image enhancement or restoration by the use of more than one image, e.g. averaging, subtraction
• G06T 7/00 - Image analysis
• G06T 7/20 - Analysis of motion

Abstract

A high voltage generator is provided. The high voltage generator includes an inverter bridge including a first bridge leg and a second bridge leg, a first resonant branch coupled in series to the first bridge leg, a transformer coupled in series between the first resonant branch and the second bridge leg, a second resonant branch coupled in series with the transformer, and a rectifier circuit coupled with the transformer for providing an output voltage to an X-ray source.

IPC Classes  ?

• H05G 1/12 - Power supply arrangements for feeding the X-ray tube with dc or rectified single-phase ac
• H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• H02M 3/00 - Conversion of dc power input into dc power output
• H02M 3/335 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 3/337 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; dental apparatus and instruments; magnetic resonance imaging (MRI) diagnostic apparatus; apparatus and installations for the production of X-rays, for medical purposes; tomographs for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; ultrasound apparatus for medical purposes; radiological apparatus for medical purposes; beds specially made for medical purposes.

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; X-ray apparatus for medical purposes; radiological apparatus for medical purposes; radiotherapy apparatus; apparatus for use in medical analysis; tomographs for medical purposes; ultrasound apparatus for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; magnetic resonance imaging [MRI] apparatus for medical purposes.

Abstract

A PET-data correction method, a PET-data correction device, a computer apparatus, and a PET-image reconstruction method. The PET data correction method includes: acquiring single-events during a PET scan, the single-event including a non-scattering event and a scattering event (S101); obtaining a first correction parameter of the non-scattering event, and correcting the non-scattering event according to the first correction parameter (S102); obtaining scattering features of the scattering event, and classifying the scattering event based on the scattering features (S103); and obtaining a second correction parameter of the scattering event of each different classification, and correcting the scattering event according to the second correction parameter (S104). By means of the PET-data correction method, a reconstruction result is more accurate, and an imaging effect is better.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/03 - Computerised tomographs

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; X-ray apparatus for medical purposes; radiological apparatus for medical purposes; radiotherapy apparatus; apparatus for use in medical analysis; tomographs for medical purposes; ultrasound apparatus for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; magnetic resonance imaging [MRI] apparatus for medical purposes.

Abstract

The present disclosure is related to systems and methods for medical imaging. The method includes determining a sequence of scan states of a medical device for a sequence of regions of interest (ROIs) of a subject. Each of the sequence of scan states corresponds to an ROI in the sequence of ROIs. When the medical device is in a scan state of the sequence of scan states, an isocenter of the medical device is aligned with a center of the corresponding ROI. The method includes generating a set of controlling information of the medical device based on the sequence of scan states. Each of the set of controlling information is configured to switch the medical device to a corresponding scan state in the sequence of scan states. The method includes controlling the medical device to scan the sequence of ROIs. Before scanning each of the sequence of ROIs, the medical device is positioned to the corresponding scan state according to the corresponding controlling information.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/04 - Positioning of patients; Tiltable beds or the like

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; nuclear medicine diagnostic imaging apparatus; magnetic resonance imaging (MRI) diagnostic apparatus; beds specially made for medical purposes; high-frequency electromagnetic therapy apparatus; ultrasound apparatus for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; magnetic resonance imaging [MRI] apparatus for medical purposes.

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; X-ray apparatus for medical purposes; radiological apparatus for medical purposes; radiotherapy apparatus; apparatus for use in medical analysis; tomographs for medical purposes; ultrasound apparatus for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; magnetic resonance imaging [MRI] apparatus for medical purposes.

Abstract

Disclosed are a method and a device of dynamic PET scanning, and a computer apparatus. The method includes: performing a PET scan on a target region of a scanned object, and acquiring first PET-scan data including a single-event count received by a PET detector (S101); determining a single-event count distribution in the target region according to the first PET-scan data (S102); adjusting a position of a scanning table according to the single-event count distribution (S103); and performing a PET scan on the scanned object according to the adjusted position of the scanning table (S104). The method achieves a dynamic correlation between the position of the scanning table and changes of a tracer within the scanned object, so that more accurate scanned data can be obtained.

IPC Classes  ?

• A61B 6/03 - Computerised tomographs
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment

Abstract

Embodiments of the present disclosure provide a method for parameter imaging. The method includes: obtaining two scan images of an object, wherein scanning ranges of the two scan images have an overlapping region; obtaining frame information by framing the two scan images or two sets of scan data corresponding to the two scan images, wherein the overlapping region in the two scan images corresponds to two frames; and determining metabolic information of a tracer inside the object based on the frame information.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation
• G06T 7/00 - Image analysis

Goods & Services

Operating tables; medical apparatus and instruments; radiotherapy apparatus; beds specially made for medical purposes; stretchers for patient transport; patient hoists; patient stretchers; furniture especially made for medical purposes; hospital gurneys; stretchers, wheeled.

Abstract

A system for equalizing a pressure in an ionization chamber of a radiation device is provided. The system may include the ionization chamber including: a chamber housing including one or more chamber walls; a chamber volume inside the chamber housing, the chamber volume being filled with a radiation sensitive material; and a pressure adjustment apparatus operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus being configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing.

IPC Classes  ?

• F16L 51/00 - Expansion-compensation arrangements for pipe-lines
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• F16L 51/02 - Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
• G01T 1/185 - Measuring radiation intensity with ionisation-chamber arrangements
• G05D 16/20 - Control of fluid pressure characterised by the use of electric means
• H01J 47/02 - Ionisation chambers

Abstract

Embodiments in the present description provide a method for controlling the docking of a mobile sickbed with a medical apparatus. The method comprises: on the basis of a docking instruction, acquiring positioning information of a target; controlling the sickbed to move according to the positioning information; and when the sickbed moves into a docking area of the medical apparatus, under the guidance of a docking structure, controlling the sickbed to be docked with the medical apparatus. According to the embodiments in the present description, an operator can carry the mobile apparatus while moving, the movement of the sickbed is controlled by continuously changing the position of the mobile apparatus, and the sickbed can also acquire an automatic planning path and move along the automatic planning path by means of the positioning information of the medical apparatus.

IPC Classes  ?

• A61G 7/00 - Beds specially adapted for nursing; Devices for lifting patients or disabled persons

Abstract

A method and system for scanning. The method may include obtaining one or more images of a target subject acquired by an imaging device (210); determining a three-dimensional (3D) geometric model of the target subject based on the one or more images (220); obtaining an anatomical structure model of at least a portion of the target subject (230); obtaining a combination model by combining the 3D geometric model of the target subject and the anatomical structure model of at least a portion of the target subject (240); and determining one or more scanning parameters of the target subject based on the combination model (250).

IPC Classes  ?

• A61B 34/10 - Computer-aided planning, simulation or modelling of surgical operations
• A61B 34/20 - Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/03 - Computerised tomographs
• A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges

Abstract

A method and system for visual registration of an image are provided. The method may include obtaining multiple images; establishing a registration relationship model including multiple registration relationships each of which is of at least two of the multiple images; and displaying at least a portion of the multiple registration relationships on a user interface, wherein one of the multiple registration relationships presents at least one of a registration mode, a registration direction, or a reference image for registration of at least two of the multiple images.

IPC Classes  ?

• G06T 7/30 - Determination of transform parameters for the alignment of images, i.e. image registration

Abstract

This disclosure may provide a system and a method. The method may include obtaining one or more sets of reference signals collected by a coil of a magnetic resonance imaging (MRI) device in a pre-scan. The pre-scan may be performed on a subject before an MRI scan of the subject. The method may also include obtaining a first fault detection model. The first fault detection model may be a trained machine learning model. The method may further include determining whether the coil has a failure based on the one or more sets of reference signals and the first fault detection model.

IPC Classes  ?

• G01R 35/00 - Testing or calibrating of apparatus covered by the other groups of this subclass
• G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver

Abstract

A radiation therapy system may include a magnetic resonance imaging (MRI) device configured to acquire MRI data with respect to a region of interest (ROI). The MRI device may include a main magnet that is around a longitudinal axis and configured to generate a magnetic field. The MRI device may also include a radiation therapy device configured to perform a treatment on at least one portion of the ROI by delivering, based on the MRI data, therapeutic radiation to the at least one portion of the ROI. The radiation therapy device may be rotatable around the longitudinal axis. The MRI device may also include a first shielding structure configured to provide interference shielding for the MRI device or the radiation therapy device. The radiation therapy device may be rotatable relative to the first shielding structure around the longitudinal axis.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging

Abstract

Systems and methods for image correction are provided. The systems and methods may obtain raw data of a target object. The systems and methods may determine, based on the raw data of the target object, a target phase. The systems and methods may generate a first image corresponding to the target phase. The systems and methods may determine, using a preset evaluation tool, an image quality evaluation result of the first image. In response to determining that the image quality evaluation result of the first image does not satisfy a preset condition, the systems and methods may generate a set of corrected raw sub-data of the target object corresponding to the target phase by correcting a set of raw sub-data of the target object corresponding to the target phase. The systems and methods may generate, based on the set of corrected raw sub-data of the target object, a corrected image corresponding to the first image.

IPC Classes  ?

• G06T 5/80 - Geometric correction
• G06T 7/00 - Image analysis
• G06T 7/11 - Region-based segmentation

Abstract

The present disclosure relates to a C-arm-based device. The C-arm-based device may include a C-arm component and a connection component. The C-arm component may include a first arm section and a second arm section. The connection component may include a first guiding section and a second guiding section separately disposed on a base. The first arm section is movably connected to the first guiding section. The second arm section is movably connected to the second guiding section.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/10 - Application or adaptation of safety means

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; radiotherapy apparatus; radiological apparatus for medical purposes; X-ray apparatus for medical purposes; tomographs for medical purposes; Radioisotope therapy apparatus and instruments; ultrasonic imaging apparatus for medical purposes; Linear accelerators for medical use in radiotherapy; apparatus and installations for the production of X-rays, for medical purposes.

Goods & Services

Computer programs, recorded; computer programs, downloadable; computer software for processing digital images; software as a medical device [SAMD]，downloadable; computer software platforms, recorded or downloadable; downloadable image files; computers; computer software, recorded; data processing apparatus; central processing units for processing information, data, sound or images.

Goods & Services

Medical apparatus and instruments; diagnostic apparatus for medical purposes; X-ray apparatus for medical purposes; radiological apparatus for medical purposes; radiotherapy apparatus; apparatus for use in medical analysis; tomographs for medical purposes; ultrasound apparatus for medical purposes; isotope apparatus and instruments for clinical diagnosis and treatment; magnetic resonance imaging [MRI] apparatus for medical purposes.

Abstract

A radiation therapy system is disclosed. The radiation therapy system includes a gantry, a first radiation source, and a second radiation source. The gantry is configured to have a cavity extending in a direction along a rotation axis, and the cavity is configured to house a target object. The first radiation source is mounted on the gantry, and configured to emit a treatment beam to a treatment area of the target object. The second radiation source is mounted on the gantry, and configured to emit an imaging beam to an imaging area of the target object. The treatment area partially overlaps the imaging area. A rotation plane of the first radiation source and a rotation plane of the second radiation source are distributed in a direction along the rotation axis.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/03 - Computerised tomographs

Goods & Services

Computers; Central processing units for processing information, data, sound or images; Computer software platforms, recorded, for ct scanning; Data processing apparatus; Downloadable computer programs for conducting quality control for medical imaging machines; Downloadable computer software for processing digital images; Downloadable image files containing medical diagnostic information; Downloadable Software as a Medical Device (SaMD) for wireless remote control of and synchronization of computed tomography (CT) apparatus; Recorded computer operating software; Recorded computer programs for editing images, sound, and video; Recorded computer software for conducting quality control for medical imaging machines

Abstract

A method and system for determining a dose of modulation (DOM) profile are provided. The method may include obtaining a 3D image and a topogram image of the object. The method may further include obtaining a dose of modulation (DOM) profile generation model. The DOM profile generation model may be generated by training a preliminary model based on a plurality of sample CT images, a plurality of sample 3D images corresponding to the plurality of sample CT images, respectively, and a plurality of sample topogram images corresponding to the plurality of sample CT images, respectively. The method may further include executing the DOM profile generation model to generate a DOM profile related to a computed tomography (CT) scan of the object based on the 3D image and the topogram image of the object.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 6/03 - Computerised tomographs
• G06F 18/214 - Generating training patterns; Bootstrap methods, e.g. bagging or boosting
• G06T 7/11 - Region-based segmentation
• G06T 7/13 - Edge detection
• G06T 7/60 - Analysis of geometric attributes

Abstract

A method for data acquisition and transmission in PET may be provided. The method may include obtaining a region of interest (ROI) of an object. The method may also include determining one or more target pairs of detectors among a plurality of detectors of an imaging device based on the ROI of the object. A response of line (LOR) corresponding to each pair of the one or more target pairs of detectors may pass though the ROI when the object is located in a detection region of the imaging device. The method may further include obtaining target coincidence events corresponding to the ROI of the object based on the one or more target pairs of detectors of the imaging device.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G06T 7/11 - Region-based segmentation
• G06T 11/00 - 2D [Two Dimensional] image generation

Abstract

The present disclosure relates to a system and a method for image reconstruction. The method may include obtaining a projection image of a subject acquired by an imaging device, the projection image including a first region with a normal exposure corresponding to a first portion of the subject and a second region with an overexposure corresponding to a second portion of the subject; using first pixel values of first pixels in the first region to correct second pixel values of second pixels in the second region; and reconstructing, based on the first pixel values of the first pixels in the first region and the corrected second pixel values of the second pixels in the second region, a target image of the subject.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation
• G06T 7/10 - Segmentation; Edge detection
• G06V 10/75 - Image or video pattern matching; Proximity measures in feature spaces using context analysis; Selection of dictionaries

Abstract

A method for medical imaging is provided. The method may include obtaining historical state information of a scanning region in a historical scan and current state information of the scanning region in a current scan to be performed; determining whether historical parameter values of one or more imaging parameters used in the historical scan need to be updated based on a comparison result between the historical state information and the current state information; in response to determining that the historical parameter values of the one or more imaging parameters used in the historical scan need to be updated, determining updated parameter values of the one or more imaging parameters based on the historical state information and the current state information; and directing a medical imaging device to perform the current scan based on the updated parameter values of the one or more imaging parameters.

IPC Classes  ?

• G06T 7/00 - Image analysis
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration

Abstract

Embodiments of the present disclosure provide a method and a system for image scanning. The method may include: obtaining image data of a subject, the image data being acquired by a scanning device scanning the subject during a time period; determining, based on the image data, a motion state of the subject in a motion cycle; obtaining a physiological signal of the subject in the motion cycle; determining, based on the motion state of the subject and the physiological signal of the subject, scan gating information of the subject; and determining, based on the scan gating information, target image data of the subject.

IPC Classes  ?

• A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
• A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume

Abstract

The present disclosure relates to a method for image processing. The method may be implemented on a computing device having at least one storage device storing a set of instructions, and at least one processor in communication with the at least one storage device. The method may include for each stage of at least one stage of a target disease, determining a type of one or more regions of interest (ROIs) corresponding to the stage; generating a first distribution image indicating the distribution of the one or more ROIs corresponding to the stage in a subject by processing a structural image of the subject based on the type of the one or more ROIs; and generating a lesion detection result of the subject by processing a functional image of the subject based on the first distribution image corresponding to the stage.

IPC Classes  ?

• G06T 7/00 - Image analysis

Abstract

Method and system for geometric correction based on image tracking, the method including: obtaining a plurality of projection images of a geometric model, each of the projection images including a projection marker corresponding to an original marker in the geometric model; obtaining an initial correspondence between the original markers in the geometric model and the projection markers in one of the projection images; determining a target correspondence between the original markers in the geometric model and the projection markers in the tracked projection image by tracking, based on a correlation of the projection images and the initial correspondence, the projection markers in the projection images; performing, based on the target correspondence, a geometric correction.

IPC Classes  ?

• G06T 5/00 - Image enhancement or restoration
• G06T 5/50 - Image enhancement or restoration by the use of more than one image, e.g. averaging, subtraction
• G06T 7/00 - Image analysis
• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments

Abstract

A method and an apparatus for correcting an image, an electronic device, and a non-transitory computer-readable storage medium. The method includes following steps. Initial data are acquired, and an initial image is generated to be processed based on the initial data. The initial image is preprocessed to generate a first image, and the first image includes multiple types of image regions. First data are generated based on the first image, and second data are generated based on the first data and the initial data. A second image is generated based on the second data.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 5/00 - Image enhancement or restoration
• G06T 7/13 - Edge detection
• G06T 7/136 - Segmentation; Edge detection involving thresholding
• G06T 7/20 - Analysis of motion
• G06T 7/30 - Determination of transform parameters for the alignment of images, i.e. image registration

Abstract

The present disclosure provides a CT device and a method for controlling a CT device. The CT device includes a CT gantry and at least one infusion clip. The CT gantry includes a first end cover and a second end cover opposite to each other. Either or both of a surface of the first end cover and a surface of the second end cover is provided with a guiding rail. One end of each infusion clip is connected to one guiding rail and is slidable along the guiding rail, and the other end of the infusion clip is configured to position an infusion assembly.

IPC Classes  ?

• A61B 6/03 - Computerised tomographs
• A61M 5/14 - Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• A61M 5/168 - Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters
• A61M 25/02 - Holding devices, e.g. on the body

Abstract

The present disclosure may provide a calibration system and a method for imaging field. The method may include obtaining a calibration model of a target imaging device. The calibration model may include at least one convolutional layer, and the at least one convolutional layer may include at least one candidate convolution kernel. The method may also include determining a target convolution kernel based on the at least one candidate convolution kernel of the calibration model. The method may also include determining calibration information of the target imaging device based on the target convolution kernel. The calibration information may be used to calibrate at least one of a device parameter of the target imaging device or imaging data acquired by the target imaging device.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06T 5/20 - Image enhancement or restoration by the use of local operators

Abstract

A system and method for MRI are provided. An initial spatial factor may be based on first MRI signals collected in a first imaging stage of an MRI scan of a subject. Second MRI signals collected during a second imaging stage of the MRI scan after the first imaging stage may be obtained. Temporal factors or/and updated spatial factors may be determined. Each of the temporal factors may be determined based on the second MRI signals collected before the determination of the temporal factor. Each of the updated spatial factors may be determined based on the second MRI signals collected before the determination of the updated spatial factor. Real-time MRI images within the second imaging stage may be generated. Each of the real-time MRI images may be generated based on the latest determined temporal factor and one of the initial spatial factor or the latest determined spatial factor.

IPC Classes  ?

• G01R 33/565 - Correction of image distortions, e.g. due to magnetic field inhomogeneities
• G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques

Goods & Services

Computer software, recorded; computer software for processing digital images; central processing units for processing information, data, sound or images; downloadable image files; computers; computer software platforms, recorded or downloadable; computer programs, recorded; software as a medical device [SaMD], downloadable; computer programs, downloadable; data processing apparatus.

Abstract

A motion platform, a medical bed, and a medical device are provided. The motion platform may include a moveable plate, a first driving mechanism, a second driving mechanism, and a fulcrum mechanism. The first driving mechanism and the second driving mechanism may be connected to the moveable plate at a first support point and a second support point, respectively. The fulcrum mechanism may be connected to the moveable plate at a third support point. The first support point, the second support point, and the third support point may be non-collinear. The first driving mechanism and the second driving mechanism may be configured to cause the moveable plate to move in at least two degrees of freedom relative to the third support point.

IPC Classes  ?

• A61G 13/04 - Adjustable operating tables; Controls therefor tiltable around transverse or longitudinal axis
• A61G 13/12 - Rests specially adapted therefor; Arrangements of patient-supporting surfaces

Abstract

The present disclosure provide a device. The device may include: a pedestal; a rotation base disposed on the pedestal; an imaging component disposed on the rotation base; and a treatment component disposed on the rotation base. The imaging component and the treatment component may be disposed on a same side of the rotation base, and the imaging component and the treatment component may be configured to rotate around a first rotation axis of the rotation base.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Goods & Services

Medical apparatus and instruments; Computed tomography [CT] apparatus; apparatus for use in medical analysis; diagnostic apparatus for medical purposes; X-ray apparatus for medical purposes; radiotherapy apparatus; magnetic resonance imaging [MRI] apparatus for medical purposes; tomographs for medical purposes; Diagnostic ultrasound instruments for medical use; beds specially made for medical purposes; Magnetic resonance tomography apparatus; Dynamic tomography apparatus for medical use; X-ray tomography apparatus for medical use.

Goods & Services

computer software, recorded; data processing apparatus; downloadable mobile applications; computer programs, downloadable; computer software platforms, recorded or downloadable; Central processing units for processing information, data, sound or images; software as a medical device [SaMD], downloadable; downloadable image files; Computer software adapted for use in the operation of computers.

Abstract

A system is provided in the present disclosure. The system may acquire a first set of echo signals and a second set of echo signals relating to a subject. The first and the second set may be generated by using an MR scanner to execute a first acquisition and a second acquisition on the subject, respectively. The first acquisition may include at least a first repetition and a second repetition with different repetition times. Each of the first and second repetitions may have a first flip angle. The second acquisition may include at least a third repetition and a fourth repetition with different repetition times. Each of the third repetition and the fourth repetition may have a second flip angle different from the first flip angle. The system may also perform a measurement on the subject based on at least one of the first set or the second set.

IPC Classes  ?

• G01R 33/50 - NMR imaging systems based on the determination of relaxation times
• G01R 33/48 - NMR imaging systems
• G01R 33/563 - Image enhancement or correction, e.g. subtraction or averaging techniques of moving material, e.g. flow-contrast angiography
• G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques

Abstract

The present disclosure relates to a particle transport simulation method which includes obtaining a virtual particle source, simulating a deflection of the virtual particle source under a magnetic field to obtain a deflected particle, modeling one or more of a range modulator, a beam limiting hole, and an exit window based on physical properties of the range modulator, the beam limiting hole and the exit window, respectively, to obtain one or more of a range modulator model, a beam limiting hole model, and an exit window model, and simulating physical processes of the deflected particle in the one or more of the range modulator model, the beam limiting hole model, and the exit window model, respectively.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Abstract

Systems and methods for MRI are provided. The systems obtain a reference MR image of a target subject. The reference MR image is acquired by performing a reference MR scan on a first anatomical structure of the target subject before a target MR scan. The target MR scan is to be performed on a second anatomical structure of the target subject. The second anatomical structure is smaller than the first anatomical structure. The systems determine geometrical information of the second anatomical structure based on the reference MR image. The systems determine a target scanning protocol with respect to the target MR scan based on the geometrical information. The systems acquire a target MR image of the second anatomical structure by performing the target scan based on the target scanning protocol. In the target MR image, the second anatomical structure is not overlapped with other anatomical structures of the target subject.

IPC Classes  ?

• G01R 33/54 - Signal processing systems, e.g. using pulse sequences
• G01R 33/483 - NMR imaging systems with selection of signal or spectra from particular regions of the volume, e.g. in vivo spectroscopy

Abstract

The present disclosure relates to systems and methods for imaging. The method may include obtaining a first image and topology data of an object, wherein the topology data may include first topology data and second topology data, and the first topology data may correspond to the second topology data. The method may also include determining a base material density image corresponding to the first image, determining a difference in the topology data based on the first topology data and the second topology data, and determining a second image corresponding to the first image based on the first image, the base material density image, and the difference in the topology data.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation

Abstract

A system and method for calibrating an image acquisition device are provided. First characteristic information of one or more optical markers in a first coordinate system applied to a medical device may be obtained. Multiple images each of which includes the one or more optical markers acquired by an image acquisition device may be obtained. Second characteristic information of the one or more optical markers in a second coordinate system applied to the multiple images acquired by the image acquisition device based on the multiple images may be obtained. A transform relationship between the first coordinate system and the second coordinate system may be determined based on the first characteristic information and the second characteristic information of the one or more optical markers.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
• G06T 7/60 - Analysis of geometric attributes

Abstract

The present disclosure provides methods and systems for federated learning. The systems include a central server and client devices communicatively connected with the central server. The central server may be configured to maintain a global prediction model for signal prediction, and each of the client devices is configured to maintain a local prediction model for signal prediction corresponding to at least one medical device. The client devices include one or more target client devices.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06V 10/774 - Generating sets of training patterns; Bootstrap methods, e.g. bagging or boosting
• G06V 10/94 - Hardware or software architectures specially adapted for image or video understanding
• G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques
• G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
• G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS

Abstract

Embodiments of the present disclosure provide methods and systems for processing a medical image. The method may include obtaining a first image; determining a second image by optimizing the first image; and obtaining a third image by inputting the second image and K-space dataset determined based on the second image into a fidelity model, wherein the fidelity model includes a trained machine learning model.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level

Abstract

The present disclosure may provide imaging method and system. The method may include obtaining a plurality of signals relating to a region of interest (ROI) of an object acquired by applying to the object a plurality of chemical exchange and saturation transfer (CEST) preparations with a plurality of offset frequencies; and generating an image of the ROI based on the plurality of signals. The plurality of CEST preparations may be configured to excite proton exchange of a substance in the ROI. The plurality of CEST preparations may be divided into one or more groups. Each of the one or more groups may include multiple CEST preparations with a same offset frequency among the plurality of offset frequencies. After a last CEST preparation in each of the one or more groups is applied to the object, the substance may reach a saturation degree that exceeds a saturation threshold.

IPC Classes  ?

• G01V 3/00 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
• G01R 33/48 - NMR imaging systems
• G01R 33/56 - Image enhancement or correction, e.g. subtraction or averaging techniques

Abstract

A position detection device of a multi-leaf collimator (MLC) is provided. The position detection device includes a signal emitting component, a signal feedback component, and a processor. The signal emitting component is configured to emit a signal. The signal feedback component is configured to receive the signal emitted by the signal emitting component and generate a feedback signal in response to the received signal. Installation positions of the signal emitting component and the signal feedback component are arranged so that the signal emitted by the signal emitting component can be projected onto the signal feedback component. The processor communicatively connected with the signal feedback component and configured to receive the feedback signal from the signal feedback component and determine a moving stroke of a leaf of the MLC based on the feedback signal.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• G01B 11/00 - Measuring arrangements characterised by the use of optical techniques

Abstract

The present disclosure is related to systems and methods for image processing. The method includes obtaining, from a first image set of a subject acquired at a first time point, a first image; obtaining, from a second image set of the subject acquired at a second time point, a second image, wherein the first image and the second image correspond to a same region of the subject; determining a displacement vector field based on the first image and the second image; and generating a target image based on the displacement vector field, the first image set and the second image set.

IPC Classes  ?

• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06T 7/33 - Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
• G06T 7/38 - Registration of image sequences

Abstract

A system for limited view imaging is provided. The system may obtain a reference image of an object. The system may identify, from the reference image, one or more critical boundaries between a target organ of the object and one or more adjacent organs of the target organ. The system may determine an imaging angle range of the object based on the one or more critical boundaries. The system may further cause an imaging device to scan the object based on the imaging angle range, the object being in a breath-hold state during the scan.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G06T 7/13 - Edge detection
• A61B 6/03 - Computerised tomographs
• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Abstract

The present disclosure is related to systems and methods for data masking. The method includes obtaining data associated with coincidence events related to intrinsic background radiations of a plurality of crystals of the PET device. Each of the coincidence events may be detected by two crystals of the plurality of crystals of the PET device. The data associated with the each coincidence event may include first time information and second time information. The method includes determining a first time of fight (TOF) difference corresponding to the each coincidence event based on the first time information and the second time information. The method includes determining a second TOF difference corresponding to the each coincidence event based on locations of the two crystals that detect the each coincidence event. The method includes correcting the PET device based on the first TOF difference and the second TOF difference.

IPC Classes  ?

• G01T 7/00 - MEASUREMENT OF NUCLEAR OR X-RADIATION - Details of radiation-measuring instruments
• A61B 6/03 - Computerised tomographs
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G01T 1/202 - Measuring radiation intensity with scintillation detectors the detector being a crystal

Abstract

The present disclosure provides systems and methods for molecular imaging. The systems and methods may obtain, using at least one 3D camera, image data of at least one movable detector of an ECT device. The systems and methods may determine, based on the image data of the at least one movable detector, an arrangement of the at least one insert detector in a coordinate system that relates to the ECT device. The systems and methods may also obtain image data of an object by performing, using the at least one movable detector, an ECT imaging on the object. The systems and methods may generate, based on the arrangement of the at least one movable detector and the image data of the object, an image of the object.

IPC Classes  ?

• G06T 15/00 - 3D [Three Dimensional] image rendering

Abstract

An energy spectrum acquisition method and system, and a storage medium. The acquisition method comprises: acquiring a first depth dose curve corresponding to a first energy and a second depth dose curve corresponding to a second energy; on the basis of the first depth dose curve and the second depth dose curve, respectively acquiring, in a depth direction, a first group of dose values and a second group of dose values; and determining the relationship between the first depth dose curve and the second depth dose curve on the basis of the first group of dose values and the second group of dose values; on the basis of the first depth dose curve, acquiring a first energy spectrum corresponding to the first depth dose curve; and on the basis of the first energy spectrum corresponding to the first depth dose curve and the relationship between the first depth dose curve and the second depth dose curve, determining a second energy spectrum corresponding to the second depth dose curve. An energy spectrum acquisition system (200) comprises a curve acquisition module (210), a dose value acquisition module (220), a relationship determination module (230), a first energy spectrum acquisition module (240) and a second energy spectrum determination module (250).

IPC Classes  ?

• G01T 1/36 - Measuring spectral distribution of X-rays or of nuclear radiation

Abstract

An image processing method, system and apparatus, and a storage medium. The method comprises: acquiring a model image and a normalization standard (310); performing a first instance of processing on the model image, so as to generate a recovery coefficient of the model image which has been subjected to the first instance of processing, and determining whether the recovery coefficient meets the normalization standard (320); in response to the recovery coefficient meeting the normalization standard, acquiring a target processing parameter (330), wherein the target processing parameter is a processing parameter for the first instance of processing when the recovery coefficient meets the normalization standard; and processing, on the basis of the target processing parameter, an image to be processed, so as to determine an image processing result (340).

IPC Classes  ?

• G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
• G06T 7/00 - Image analysis

Abstract

A container for medical device transportation is provided. The container may include a body including a cavity for accommodating a medical device; a support for supporting the medical device; and a guiding mechanism for guiding the support to move from an entrance of the body to a target position in the cavity.

IPC Classes  ?

• A61B 50/30 - Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments

Abstract

A method may include obtaining a plurality of local input functions of an object, each of the plurality of local input functions being of a scanning area of the object. One of the plurality of local input functions may be obtained based on a scan for one of a plurality of table positions where a table for placing the object is located. Adjacent table positions in the plurality of table positions may correspond to an overlapping scanning area. The method may also include obtaining local input functions of at least one overlapping scanning area based on the plurality of local input functions; and determining a continuous input function of at least a portion of a target scanning area based on the local input functions of the at least one overlapping scanning area.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment

Abstract

The present disclosure relates to a system and method for extracting a region of interest. Image data in a first sectional plane may be acquired. The image data in the first sectional plane may include at least one first slice image and one second slice image. A first region of interest (ROI) in the first slice image may be determined. A second ROI in the second slice image may be determined. A first volume of interest (VOI) may be determined based on the first ROI, the second ROI, and characteristic information of the image data in the first sectional plane.

IPC Classes  ?

• G06T 19/00 - Manipulating 3D models or images for computer graphics
• G06T 7/11 - Region-based segmentation
• G06T 7/187 - Segmentation; Edge detection involving connected component labelling
• G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• G06T 7/12 - Edge-based segmentation
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]

Goods & Services

Data processing apparatus; computers; computer operating programs, recorded; downloadable image files; microprocessors; computer programs, recorded; recorded computer software; computer program (downloadable software); computer software, recorded.

Abstract

The present disclosure provides systems, devices, and methods for scanning parameter determination. The systems may display, via a user terminal, a user interface including one or more input items for a user to input clinical information relating to a target subject. The clinical information may at least include symptom information. The systems may receive, from the user terminal, the clinical information relating to the target subject. The systems may further determine, based on the clinical information using a scanning parameter determination model, recommended values of scanning parameters to be used in a scan of the target subject. The scanning parameter determination model may be a trained machine learning model.

IPC Classes  ?

• A61B 6/03 - Computerised tomographs
• G06T 7/00 - Image analysis

Abstract

The present disclosure relates to a method for image reconstruction, which includes obtaining original scanning data of an object, obtaining an initial image and an initial motion vector field of the object, and determining a target reconstructed image of the object based on the original scanning data, the initial image and the initial motion vector field by a plurality of iterations. The iterative result of at least one of the iterations is obtained based on a machine learning model.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation

Abstract

The present disclosure relates to a data processing method for a detector of a medical device, which includes: obtaining a plurality of dark current values of at least one detector channel of a detector within a preset time period, adjusting the plurality of dark current values based on a preset scanning precision to determine a plurality of adjusted dark current values, and determining a dark current compensation value corresponding to the at least one detector channel based on the plurality of adjusted dark current values.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment

Abstract

A medical system for movable medical devices may be provided. First information relating to an examination room where a movable medical device is located may be provided. Further, at least one of environment information of the examination room or subject information relating to one or more subjects in the examination room may be determined based on the first information. The one or more subjects may include a target subject to be scanned. Then, a scan protocol to be used in a medical scan of the target subject may be determined based on the at least one of the environment information or the subject information.

IPC Classes  ?

• G16H 40/40 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• G16H 40/20 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
• A61B 6/04 - Positioning of patients; Tiltable beds or the like

Abstract

The present disclosure may relate to methods and systems for controlling a medical device. The method may include: obtaining a first user input; determining whether the first user input satisfies a trigger condition; in response to determining that the first user input satisfies the trigger condition, causing a control device to enter a control state; obtaining a tilt state of the control device; and controlling, based on the tilt state, a motion state of at least one component of the medical device.

IPC Classes  ?

• G16H 40/60 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
• G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
• G06F 3/02 - Input arrangements using manually operated switches, e.g. using keyboards or dials
• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer

Goods & Services

Computer software platforms, recorded or downloadable; data processing apparatus; computer programs, recorded; computer operating software; computer software for processing digital images; computer software applications, downloadable; computer programs, downloadable; computer operating programs, recorded; computer software for controlling self-service terminals; detectors.

Abstract

A detector module(100) may be provided. The detector module(100) may comprise one or more detector elements(10). Each of the one or more detector elements(10) may include a detector crystal(110), a basal board(120), a supporting component(140), and a flexible board(130). The detector crystal(110) may be mounted on a side of the basal board(120) and configured to receive rays from a subject and generate a detection signal based on the rays. The supporting component(140) may be configured to support the basal board(120). The supporting component(140) may include a concave structure(141) for accommodating at least a portion of the flexible board(130).

IPC Classes  ?

• G01T 1/202 - Measuring radiation intensity with scintillation detectors the detector being a crystal
• G01T 7/00 - MEASUREMENT OF NUCLEAR OR X-RADIATION - Details of radiation-measuring instruments

Abstract

A slidable ring assembly (300) and a medical device (10) comprising same. The slidable ring assembly (300) comprises: at least one first conductor set, each first conductor set comprising a first conductor (310) and a second conductor (320), and the first conductor (310) and the second conductor (320) being configured into a ring shape; and at least one second conductor set, each second conductor set comprising a third conductor (330) and a fourth conductor (340), and the third conductor (330) and the fourth conductor (340) being configured into a ring shape. The first conductor (310), the second conductor (320), the third conductor (330), and the fourth conductor (340) are spaced apart from each other. The first conductor (310) is configured to introduce a first current having a first phase and a first amplitude. The second conductor (320) is configured to introduce a second current having a second phase and a second amplitude. The third conductor (330) is configured to introduce a third current having a third phase and a third amplitude. The fourth conductor (340) is configured to introduce a fourth current having a fourth phase and a fourth amplitude.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• H01R 39/08 - Slip-rings

Abstract

An image processing method is provided, including: obtaining image data of a cavity wall of an organ; unfolding the cavity wall; and generating an image of the unfolded cavity wall. The unfolding of the cavity wall may include: obtaining a mask and a centerline of the organ; obtaining a connected region of the mask; dividing the connected region into at least one equidistant block; determining an orientation of the equidistant block in a three-dimensional coordinate system including a first direction, a second direction and a third direction; determining an initial normal vector and an initial tangent vector of a center point of the centerline; assigning a projection of the initial normal vector to a normal vector of a light direction of the center point; assigning the third direction or an reverse direction of the third direction to a tangent vector of the light direction of the center point.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 3/00 - Geometric image transformation in the plane of the image
• G06T 7/187 - Segmentation; Edge detection involving connected component labelling
• G06T 7/11 - Region-based segmentation

Abstract

Methods and systems for signal processing in molecular imaging. The system may include at least one storage device including a set of instructions and at least one processor in communication with the storage device. The at least one processor may obtain a first signal that is acquired by sampling, according to a first sampling frequency, an electrical signal of a detector. The at least one processor may also generate, based on the first signal and a target machine learning model, a second signal, the second signal corresponding to a second sampling frequency that is different from the first sampling frequency. The target machine learning model may specify a target mapping between the first signal and the second signal. The at least one processor may further generate an image based on the second signal.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation
• G01T 1/20 - Measuring radiation intensity with scintillation detectors
• G06N 3/0464 - Convolutional networks [CNN, ConvNet]

Abstract

A method of nidus segmentation includes: acquiring a medical image to be processed; performing a vessel segmentation on the medical image to be processed to obtain a first vessel segmentation result; extracting a first centerline of a first vessel according to the first vessel segmentation result; cutting the medical image to be processed for several times to obtain a plurality of first sections and further obtain a first object medical image by synthesizing the plurality of sections, and cutting the first vessel segmentation result for several times to obtain a plurality of second sections and further obtain a first object vessel segmentation result by synthesizing the plurality of second sections; and obtaining a nidus segmentation result based on the first object medical image and the first object vessel segmentation result.

IPC Classes  ?

• G06T 7/11 - Region-based segmentation
• G06T 7/00 - Image analysis

Abstract

The present disclosure provides a magnetic resonance imaging (MRI) device. The MRI device may include a main magnet configured to generate a main magnetic field. The main magnet may form an accommodation space configured to accommodate a target object. The main magnet may include at least one group of main field coils. A direction of the main magnetic field generated by the at least one group of main field coils may form a preset angle with an axial direction of the accommodation space. The at least one group of main field coils may include a first group of main field coils and a second group of main field coils that are arranged oppositely along a radial direction of the accommodation space. Each of the first group of main field coils and the second group of main field coils may bend towards each other.

IPC Classes  ?

• G01R 33/34 - Constructional details, e.g. resonators
• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• G01R 33/48 - NMR imaging systems

Abstract

The present disclosure provides methods and systems for dose distribution prediction. The methods comprise obtaining historical state information and current state information of a target subject. The current state information may reflect the state of the target subject in a current treatment fraction, and the historical state information may reflect the state of the target subject prior to the current treatment fraction. The methods also comprise determining a feature parameter of at least one optimization target with respect to the current treatment fraction, and predicting a current dose distribution to be used in the current treatment fraction based on at least part of the historical state information, the current state information, and the feature parameter of the at least one optimization target using a dose prediction model, the dose prediction model being a trained machine learning model.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• G16H 20/40 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Abstract

A housing in an imaging apparatus is provided. The imaging apparatus may include a Magnetic Resonance (MR) component and a Positron Emission Tomography (PET) component that includes a plurality of detectors. The housing may include one or more enclosed spaces configured to accommodate the plurality of detectors of the PET component. Each of the one or more enclosed spaces is defined by one or more walls.

IPC Classes  ?

• G01R 33/48 - NMR imaging systems
• A61B 6/03 - Computerised tomographs
• A61B 6/10 - Application or adaptation of safety means
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G01R 33/34 - Constructional details, e.g. resonators
• G01R 33/36 - Electrical details, e.g. matching or coupling of the coil to the receiver

Abstract

A method for image stitching is provided. The method may include obtaining a reference image of a first portion of a subject and a target image of a second portion of the subject, and determining at least one pair of feature points based on a preliminary registration accuracy. The first and second portions may at least partially overlap with each other. Each pair may include a reference feature point in the reference image and a target feature point in the target image that matches the reference feature point. For each pair, the method may further include determining an updated pair of feature points based on a superior registration accuracy higher than the preliminary registration accuracy and a neighboring region of the target feature point of the pair. The method may further include generating a stitched image based on the at least one updated pair.

IPC Classes  ?

• G06T 3/40 - Scaling of a whole image or part thereof
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06T 7/33 - Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G06T 3/60 - Rotation of a whole image or part thereof

Abstract

The present disclosure is related to systems and methods for controlling an imaging device. The system may include an imaging device, a voice processing device, and a terminal. The imaging device may be configured to image a subject. The voice processing device may be configured to receive a first voice signal from or transmit a second voice signal to the subject when the subject is positioned within the imaging device. The terminal may be configured to receive a third voice signal from or transmit a fourth voice signal to a user.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• G06F 3/16 - Sound input; Sound output

Abstract

A method, a system, and a readable medium for data processing. The method includes: obtaining one or more data processing parameters, the one or more data processing parameters being determined based on a reference detector module (910); obtaining target data of a target object collected by one or more signal detectors (920); and processing the target data based on the one or more data processing parameters (930).

IPC Classes  ?

• A61B 6/03 - Computerised tomographs
• G01T 1/161 - Applications in the field of nuclear medicine, e.g. in vivo counting

Abstract

Methods and systems for imaging are disclosed. The method may include obtaining current information of a target subject (510). The current information may include information relating to current radiation attenuation of the target object. The method may also include obtaining reference information of the target subject (520). The reference information may include information relating to historical radiation attenuation of the target object. The method may also include determining at least one current parameter of the target subject based on the current information and the reference information (530). The method may also include obtaining a target image of the target subject based on the at least one current parameter (540).

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment

Abstract

Methods and systems for controlling an imaging device, and detecting parameters of a detector are disclosed. The method (1000) may include applying a voltage on a semiconductor crystal of a detector of the imaging device (1010); obtaining a current of the semiconductor crystal (1020); determining, based on the voltage, the current, and at least one preset relationship, at least one parameter of the semiconductor crystal (1030); and calibrating and/or controlling the imaging device based on the at least one parameter (1040).

IPC Classes  ?

• A61B 6/03 - Computerised tomographs

Abstract

An electron gun may include a cathode with an emitting surface configured to emit electrons. The cathode may include a through hole that goes through the emitting surface and is configured to allow back-streaming electrons of the emitted electrons to pass through. The electron gun may also include an anode configured to attract the emitted electrons from the cathode to the anode and focus the emitted electrons into an electron beam. The electron gun may also include a grid structure configured to facilitate the focusing of the emitted electrons, the grid structure being positioned corresponding to the through hole.

IPC Classes  ?

• H01J 3/02 - Electron guns
• H01J 1/02 - Main electrodes

Abstract

Systems and methods for image segmentation are provided. A system may obtain a first image of a subject. The system may obtain non-image information associated with at least one of the first image or the subject. The system may further determine a region of interest (ROI) of the first image based on the first image, the non-image information, and an image segmentation model.

IPC Classes  ?

• G06T 7/10 - Segmentation; Edge detection
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]

Abstract

A method for data acquisition in PET may be provided. The method may include obtaining, based on outputs of multiple pairs of detectors of a Positron Emission Tomography (PET) scanner, coincidence events corresponding to multiple LORs. The outputs of the multiple pair of detectors may be acquired during a PET scan on a subject. The method may also include determining, based on a count of coincidence events corresponding to each LOR of at least a portion of the multiple LORs, a detection rate corresponding to the LOR.

IPC Classes  ?

• A61B 6/03 - Computerised tomographs
• G06T 7/00 - Image analysis

Abstract

Provided in the embodiments of the description are an image-guided radiotherapy system and a method thereof. The system comprises: a first detection component configured for collecting photon signals generated by radionuclides in the body of a subject to determine a first image of a target area of the subject; at least one imaging source configured for emitting an imaging beam to the target area of the subject to determine a second image; and a radiation source configured for emitting a treatment beam to the target area of the subject. The first detection component and the at least one imaging source are mounted on a first rotatable portion. The radiation source is mounted on a second rotatable portion. The first rotatable portion and the second rotatable portion are coaxially and coplanarly arranged. The first detection component or the at least one imaging source is configured moveable relative to the first rotatable portion.

IPC Classes  ?

• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
• H05G 1/02 - Constructional details

Abstract

A slip ring assembly (300), comprising: a base body (301), wherein the base body (301) is configured to be annular and adapted to be made of an insulating material, and in the axial direction of the base body (301), the base body (301) comprises a first side and a second side opposite to the first side; at least one first conductor (310), the first conductor (310) being configured to be annular and adapted to be fixed on the first side or the second side; and at least one second conductor (320), the second conductor (320) being configured to be annular and adapted to be fixed on the first side or the second side. The first conductor (310) and the second conductor (320) are electrically insulated, and the projections of the first conductor (310) and the second conductor (320) in the axial direction of the base body (301) at least partially overlap.

IPC Classes  ?

• H01R 39/08 - Slip-rings
• H01R 39/64 - Devices for uninterrupted current collection
• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• A61N 5/10 - X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Abstract

Embodiments of the present disclosure provide a method and a system for determining an image control point. The method may include obtaining a first image; determining a plurality of initial control points in the first image; dividing the first image into at least two sub-regions; and determining, based on one or more features of the plurality of initial control points, one or more target control points in each of the at least two sub-regions.

IPC Classes  ?

• G06T 5/00 - Image enhancement or restoration

Abstract

A method, system (100, 200), and device for determining scanning parameters of computer tomography. The method may include: obtaining relevant information of a target object and one or more reference scanning parameters in a scanning parameter set (810); determining attenuation information of the target object based on the relevant information (820); and determining one or more target scanning parameters in the scanning parameter set based on the one or more reference scanning parameters and the attenuation information (830).

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment

Abstract

This application disclosures a method for calibrating filament current data of an X-ray tube. The method includes obtaining a first value of tube current to be calibrated and a value of filament current to be calibrated, the tube current to be calibrated and the filament current to be calibrated corresponding to a first calibration point; performing an emission operation based on the first value of the tube current to be calibrated and the value of the filament current to be calibrated; determining an actual value of the tube current during the emission operation; determining a difference between the actual value of the tube current and the first value of the tube current to be calibrated; and calibrating, based on the difference, the first calibration point.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• H05G 1/34 - Anode current, heater current or heater voltage of X-ray tube
• A61B 6/03 - Computerised tomographs
• H05G 1/26 - Measuring, controlling or protecting

Abstract

A system and method for image correction is provided. The method includes: receiving an original image including a metal artifact; pre-correcting the original image; generating correction data based on the original image and the pre-corrected image; weighting the original image and the pre-corrected image based on the correction data and a regularity degree of the metal artifact, the regularity degree of the metal artifact being associated with actual projection data of the metal artifact and ideal projection data of the metal artifact; and generating a corrected image based on the weighting.

IPC Classes  ?

• G06T 5/00 - Image enhancement or restoration
• G06T 7/11 - Region-based segmentation
• G06T 5/50 - Image enhancement or restoration by the use of more than one image, e.g. averaging, subtraction
• G06T 11/00 - 2D [Two Dimensional] image generation

Abstract

A heat dissipation system and a medical system. The heat dissipation system comprises a circulation pipeline (40) and a cooling device (30). The circulation pipeline (40) is used for conveying a cooling medium to a medical system. The medical system comprises at least two electric units, and the at least two electric units have different rated cooling temperatures. The cooling device (30) is in communication with the circulation pipeline (40) and is used for adjusting the temperature of the cooling medium, so as to dissipate heat of the at least two electric units.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

Systems and methods for image processing are provided. The systems obtain a plurality of images of a target subject that are captured consecutively over time. The target subject is injected with tracer and including a target body portion. For each of the plurality of images, the systems generate a sub-image of the target body portion by segmenting the image and transform the sub-image to generate a transformed sub-image in a standard space based on a template image of the target body portion. The standard space includes a plurality of template images of a plurality of body portions. The systems further determine an uptake variation curve indicating a change of tracer uptake in the target body portion over the time based on the transformed sub-images corresponding to the plurality of images.

IPC Classes  ?

• G16H 15/00 - ICT specially adapted for medical reports, e.g. generation or transmission thereof

Abstract

The present disclosure relates to a method for image processing. The method may be implemented on a computing device having at least one storage device storing a set of instructions, and at least one processor in communication with the at least one storage device. The method may include for each stage of at least one stage of a target disease, determining a type of one or more regions of interest (ROIs) corresponding to the stage; generating a first distribution image indicating the distribution of the one or more ROIs corresponding to the stage in a subject by processing a structural image of the subject based on the type of the one or more ROIs; and generating a lesion detection result of the subject by processing a functional image of the subject based on the first distribution image corresponding to the stage.

IPC Classes  ?

• G06T 15/08 - Volume rendering
• G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
• G06T 7/11 - Region-based segmentation

Abstract

Systems and methods for image processing are provided. The systems may obtain a blood vessel image of a target subject. The systems may generate, based on the blood vessel image, a point cloud including a plurality of data points representing a plurality of blood vessel points of the target subject. Each of the plurality of data points may include values of one or more reference features of the corresponding blood vessel point. The systems may further for each of the plurality of blood vessel points, determine values of one or more target features of the blood vessel point based on the point cloud using a determination model. The determination model may be a trained deep learning model.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06N 3/04 - Architecture, e.g. interconnection topology
• G06V 10/28 - Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns

Abstract

A bearing device (100) and a mobile digital radiography device (200) are provided. The bearing device (100) may include a mount (11), a support unit (12), a vibration absorption unit (13), and a connecting member (14). The mount (11) may be connected to the support unit (12). The support unit (12) may be connected to the connecting member (14) through the vibration absorption unit (13). The vibration absorption unit (13) may include a first elastic member (131) and a second elastic member (132). The first elastic member (131) and the second elastic member (132) may be disposed in different directions.

IPC Classes  ?

• A61B 6/00 - Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
• F16F 15/08 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means with rubber springs

Abstract

The present disclosure provides methods and systems for image reconstruction. The methods may include: obtaining background coincidence event data and target coincidence event data, the background coincidence event data being related to a first plurality of background coincidence events, the target coincidence event data being related to a target object; obtaining a target normalization correction factor; correcting the target coincidence event data based on the target normalization correction factor; and generating a target image by performing image reconstruction based on the background coincidence event data and the corrected target coincidence event data.

IPC Classes  ?

• G06T 11/00 - 2D [Two Dimensional] image generation

Abstract

A control device used for controlling a display of a medical image sequence on a display device may be provided. The control device may include a touch control panel. The touch control panel may include a plurality of predetermined regions corresponding to a plurality of gesture instructions. The control device may be configured to receive a target gesture instruction with respect to a target predetermined region among the plurality of predetermined regions. In response to the target gesture instruction, the control device may be configured to generate a control signal for controlling the display device to perform a target operation on the medical image sequence based on a corresponding relationship between the plurality of gesture instructions and a plurality of operations of the display device.

IPC Classes  ?

• G06F 3/14 - Digital output to display device
• G06F 3/04845 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
• G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
• G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing

Abstract

Embodiments of the present disclosure provide a method, a system and a non-transitory computer readable medium for imaging. The method may include: obtaining historical configuration information; adjusting the historical configuration information to generate target configuration information matching a current scanning condition; and performing, using a first device, an imaging operation on the detection object based on the target configuration information, wherein an account, a current scanning device, an operator, or a detection object under the current scanning condition is different from an account, the historical scanning device, an operator, or a detection object under the historical scanning condition, respectively.

IPC Classes  ?

• G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
• G16H 40/40 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• G06V 10/75 - Image or video pattern matching; Proximity measures in feature spaces using context analysis; Selection of dictionaries

Goods & Services

Recorded computer operating software; downloadable computer software for processing digital images; central processing units for processing information, data, sound or images; downloadable image files containing medical diagnostic information; computers; computer software platforms, recorded, for CT scanning; recorded computer programs for editing images, sound, and video; downloadable software as a medical device (SaMD) for wireless remote control of and synchronization of computed tomography (CT) apparatus; downloadable computer programs for use in cancer diagnosis; data processing apparatus

Goods & Services

Recorded computer operating software; downloadable computer software for processing digital images; central processing units for processing information, data, sound or images; downloadable image files containing medical diagnostic information; computers; computer software platforms, recorded, for ct scanning; recorded computer programs for editing images, sound, and video; downloadable software as a medical device (samd) for wireless remote control of and synchronization of computed tomography (ct) apparatus; downloadable computer programs for use in cancer diagnosis; data processing apparatus