Abstract: Provided is a method for acquiring labeled data, including acquiring a 3D-3D registration sample, wherein the 3D-3D registration sample includes a sample 3D image, a reference 3D image and 3D-3D registration data, and the 3D-3D registration data includes correspondence data between the sample 3D image and the reference 3D image; generating at least one dual-2D-image based on the sample 3D image, wherein each dual-2D-image is a combination of 2D projection images of the sample 3D image in two different directions; and generating 2D-3D registration data corresponding to each dual-2D-image based on the 3D-3D registration data, wherein each 2D-3D registration data includes correspondence data between the dual-2D-image and the reference 3D image.

Abstract: There is provided a radiotherapy system, a data processing method and a storage medium. The radiotherapy system includes a calibration database, a training module and a data processing module. The calibration database can acquire a plurality of the sample data generated in a clinical therapy process. The training module can perform deep learning on the plurality of sample data stored in the calibration database to obtain a therapy algorithm model. The data processing module can process the detection data received in the clinical therapy process according to the therapy algorithm model to generate preliminary therapy data. As the therapy algorithm model is obtained by performing deep learning on a large amount of clinical data, the reliability of the therapy algorithm model is high. Accordingly, the accuracy of the preliminary therapy data generated by the therapy algorithm model is also high.

Abstract: Provided is a method for performing image guidance, including: acquiring a 3D magnetic resonance (MR) image of a target individual, wherein at least one region range of an object of interest is marked in the 3D MR image; acquiring a reference 3D image of the target individual, wherein the reference 3D image is a 3D-reconstructed computed tomography (CT) image; performing a 3D-3D registration on the 3D MR image and the reference 3D image, so as to mark each region range of the object of interest in the reference 3D image; and performing image guidance on the basis that the reference 3D image is adopted to characterize an initial position state.

Abstract: A method for adjusting a position, including: acquiring a real-time position of a positioning marker preset at an affected part; acquiring a reference position of the positioning marker; and outputting position adjustment information, by means of a display and/or a voice, based on the real-time position and the reference position. The position adjustment information is configured to prompt a patient to adjust his/her position.

Abstract: An image-guided method and radio therapy device are provided. The method includes: acquiring a rotation offset, a planned image and a real-time image of a target object; and determining a tracking offset based on the rotation offset, the planned image and the real-time image, the tracking offset being used for tracking the target object; where the rotation offset is generated by a position difference of the target object in a planning stage and a treatment stage. The planned image of the target object is acquired in the planning stage. The tracking offset is determined based on the rotation offset, the planned image and the real-time image. The tracking of the target object based on the tracking offset compensates for image distortion caused by the deflection of the position of the target object in the planning stage and the treatment stage.

Abstract: Provided is a device for verifying a radiotherapy system, including at least two of a first verification phantom, a second verification phantom, and a third verification phantom, wherein a slot for holding a film is provided in the first verification phantom, a first positioning member is disposed at a center of the second verification phantom, a second positioning member is disposed at a center of the third verification phantom, and a center point of the first verification phantom, a center point of the first positioning member and a center point of the second positioning member are coaxial.

Abstract: The present invention relates to a radiotherapy apparatus and a method for determining target positions using a radiotherapy apparatus, so as to accurately detect the motion of the tumor position.

Abstract: A tumor positioning method includes obtaining projection images of a tumor at different angles; and registering the projection images with an initial reference image to obtain a first offset. If it is determined that a virtual reacquisition operation needs to be performed according to the first offset, the method further includes generating a first reference image according to the first offset; and registering the projection images with the first reference image to obtain a second offset. If it is determined that the operation does not need to be performed according to the second offset, the method further includes outputting a first accumulated offset being a sum of the first and second offsets. The method may solve problems of long time consuming and the service life of a treatment couch and acquisition devices being reduced due to repeatedly moving the treatment couch and repeatedly acquiring the X-ray projection images.

Abstract: Disclosed is a method for interactive contouring of a medical image, The method includes: running a contour service process to receive patient information to be contoured, perform contouring based on the patient information to be contoured, and save a contouring result; and running an access service process to acquire, in response to an access request for a contouring result of a first target patient, the contouring result of the first target patient from the saved contouring result, and send the acquired contouring result to a user terminal.

Abstract: An image guiding device includes a gantry, an imaging source, an imager, and an image server. The imaging source, the imager and the image server are all mounted on the gantry. The imager is connected to the image server. The imaging source is arranged to face the imager. The imaging source emits X-rays. The imager receives X-rays passing through an affected part of a patient, generates projection data based on the received X-rays, and sends the projection data to the image server. The image server processes the projection data to obtain an image of the affected part.

Abstract: Provided is a simulation phantom including a simulated target volume and a simulated normal tissue encasing the simulated target volume, wherein the simulated target volume and a portion of the simulated normal tissue abutting the simulated target volume have a first characteristic to enable the simulation phantom to be imaged on a first imaging device, and the simulated target volume and the portion of the simulated normal tissue abutting the simulated target volume further have a second characteristic to enable the simulation phantom to be imaged on a second imaging device different from the first imaging device.

Abstract: Provided is a method for locating a tumor. The method includes: performing image registration on a projection image of the tumor and a first standard image to acquire a first offset; generating a second standard image based on the first offset; performing image registration on the projection image and the second standard image to acquire a second offset; and updating the second standard image based on the second offset and executing the operation of image registration on the projection image and the second standard image again in response to the second offset satisfying a virtual re-sampling condition; or outputting an accumulated offset in response to the second offset not satisfying the virtual re-sampling condition, wherein the accumulated offset is a sum of the first offset and the second offset acquired by executing the operation of image registration.

Abstract: Provided is a verification phantom. The verification phantom is provided with a slot for holding a film, wherein the slot includes a first slot and a second slot; an opening of the first slot and an opening of the second slot are both disposed on a first outer surface of the verification phantom; and an extraction groove is disposed at a junction, on the first outer surface, of the opening of the first slot and the opening of the second slot.

Abstract: Provided is a device for verifying a radiotherapy system, including at least two of a first verification phantom, a second verification phantom, and a third verification phantom, wherein a slot for holding a film is provided in the first verification phantom, a first positioning member is disposed at a center of the second verification phantom, a second positioning member is disposed at a center of the third verification phantom, and a center point of the first verification phantom, a center point of the first positioning member and a center point of the second positioning member are coaxial.

Abstract: A method for tracking and irradiating a target using a radiotherapy apparatus, a device and a radiotherapy apparatus are provided. The radiotherapy apparatus includes a first ray source, a second ray source, and at least one detector. The method includes: moving the first ray source to a first location to emit a ray beam; receiving the ray beam emitted from the first ray source at the first location and generating first image data of a target according to the received ray beam, by the detector; and adjusting the second ray source according to the first image data to make the second ray source move to the first location and an emitted ray beam pass through the target, wherein a time taken for the second ray source to move to the first location is a positive integer multiple of a preset respiratory period of a patient.

Abstract: Provided is a method for performing image guidance, including: acquiring a 3D magnetic resonance (MR) image of a target individual, wherein at least one region range of an object of interest is marked in the 3D MR image; acquiring a reference 3D image of the target individual, wherein the reference 3D image is a 3D-reconstructed computed tomography (CT) image; performing a 3D-3D registration on the 3D MR image and the reference 3D image, so as to mark each region range of the object of interest in the reference 3D image; and performing image guidance on the basis that the reference 3D image is adopted to characterize an initial position state.

Abstract: Embodiments of the present disclosure provide a method and an apparatus of correcting a collimator, which may correct a position of a collimator of a gamma knife apparatus. The method includes: separately obtaining a projection image of rays sequentially passing through collimation holes and an isocenter plane in the collimator in cases where the collimator moves to M positions; determining a target position with a highest degree of alignment of the collimator from the M positions according to obtained projection images of rays; recording position parameters corresponding to the target position, so as to control the collimator to move to the target position in a case where the a gamma knife apparatus is used for treatment.

Abstract: A method for adjusting a position, including: acquiring a real-time position of a positioning marker preset at an affected part; acquiring a reference position of the positioning marker; and outputting position adjustment information, by means of a display and/or a voice, based on the real-time position and the reference position. The position adjustment information is configured to prompt a patient to adjust his/her position.

Abstract: Provided is a tumor tracking method including: acquiring a detection image when a first ray source is located at a first detection point; determining, from a first reference image sequence in a preset image library, a first reference image corresponding to the detection image; acquiring, from a second reference image sequence corresponding to the first reference image sequence in the preset image library, a second reference image determined at the same time point as the first reference image; and determining a position of a tumor relative to a second ray source according to the second reference image.

Abstract: Provided is a method for acquiring labeled data, including acquiring a 3D-3D registration sample, wherein the 3D-3D registration sample includes a sample 3D image, a reference 3D image and 3D-3D registration data, and the 3D-3D registration data includes correspondence data between the sample 3D image and the reference 3D image; generating at least one dual-2D-image based on the sample 3D image, wherein each dual-2D-image is a combination of 2D projection images of the sample 3D image in two different directions; and generating 2D-3D registration data corresponding to each dual-2D-image based on the 3D-3D registration data, wherein each 2D-3D registration data includes correspondence data between the dual-2D-image and the reference 3D image.