Abstract: The compound as shown in formula (I) or a pharmaceutically acceptable salt or pharmaceutical composition thereof, and a preparation method therefor, and the use thereof as an MAT2A inhibitor. Ring A, ring Q, X, Y, X1, X2, L and R1 in formula (I) are as defined in the description.

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: A high voltage battery cluster, and an overcurrent protection circuit and a switch box of the high voltage battery cluster are provided. The overcurrent protection circuit includes a first fusing module and a second fusing module. Since a withstand current-time curve of the first fusing module is different from a withstand current-time curve of the second fusing module, in a case that an overcurrent fault occurs in a high voltage battery cluster, one fusing module can cause an open circuit in the high voltage battery cluster prior to another fusing module, thereby preventing the high voltage battery cluster from being broken by a large current when an overcurrent fault occurs in the high voltage battery cluster, thus ensuring an electrical safety of the high voltage battery cluster.

Abstract: Embodiments of the present disclosure provide a medical imaging apparatus and a treatment device. The medical imaging apparatus includes: an imaging source, a beam stop array and a detector; the beam stop array is arranged between the imaging source and the detector; and the beam stop array includes a plurality of stop elements, the plurality of stop elements are distributed in rows in a direction perpendicular to a rotation axis, and the number of the stop elements is less than or equal to a preset number. After image reconstruction is performed using the projection, shadow areas corresponding to each slice image are reduced, errors of the slice image are reduced, and the imaging quality is improved.

Abstract: Provided is a setup method which can include: acquiring a position of a reference mark point provided on a noninvasive positioning device in an infrared coordinate system of an infrared positioning system; according to the position of the reference mark point in the infrared coordinate system, a relative position between the reference mark point and an image center point in an electronic scanning image, and a position of an isocenter of a radiotherapy equipment in a patient supporting device PSD coordinate system of the radiotherapy equipment, determining a first offset between the image center point and the isocenter in the PSD coordinate system; and adjusting the first offset to a first target offset by adjusting a position of a patient supporting device in the PSD coordinate system.

Abstract: The present disclosure provides a radiotherapy system, including a treatment couch, a gantry, a treatment head coupled to the gantry, and a control mechanism. The control mechanism is configured to control the gantry to rotate, and synchronously control the treatment couch to move along an axial direction of the gantry; and the treatment head includes a multi-leaf collimator, the multi-leaf collimator being configured so that leaves are capable of stopping at any position along a movement path to form radiation fields of various shapes.

Abstract: A method for generating contour data is provided. The method for generating contour data includes acquiring an image-guided contour of a target object, the image-guided contour including a target to be monitored; setting a contour type of the image-guided contour to be an image-guided type, which is customized in a contour type in contour data, wherein the image-guided contour of the image-guided type is intended to monitor motion of the target to be monitored of the target object; and saving contour data corresponding to the image-guided contour of the image-guided type in contour data of the target object.

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: Embodiments of the present disclosure provide a positioning method and apparatus, and a radiation therapy system. The positioning method comprises: acquiring a current gamma angle before radiation beams of a radiation source illuminate a treatment body part; acquiring a reconstructed image corresponding to the current gamma angle, the reconstructed image being an image reconstructed according to an image of the treatment body part acquired in advance; acquiring an IGRT image of the treatment body part corresponding to the current gamma angle, the IGRT image being an image generated by an image guide system; and comparing the reconstructed image with the IGRT image to obtain a deviation of the position of the treatment body part, and sending out the deviation, so that the position of the treatment body part is adjusted according to the deviation when the deviation is greater than a preset threshold.

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 tracking method, a tracking system, and an electronic device are provided. The tracking method includes: acquiring an actual scattering image of a target object at time i, where i is an integer greater than 0, and the actual scattering image is generated according to rays scattered by body tissue where the target object is located; processing the actual scattering image or a reference image corresponding to the actual scattering image with a preset model, and determining a location offset of the target object at the time i according to the processing result; and tracking the target object according to the location offset of at least one time. The preset model is indicative of a location conversion relationship of corresponding pixels in images that are formed before and after the rays are scattered.

Abstract: Provided is a method for interaction of multi-party medical information, a computer device and a storage medium. The method includes: displaying medical statistical data of a target user in a pre-established multi-party consultation group for the target user, wherein the multi-party consultation group includes members of a plurality of medical disciplines associated with the target user and a virtual object; acquiring medical opinions for the target user fed back by the members in the multi-party consultation group; and determining, based on the medical opinions, a medical consultation conclusion for the target user.

Abstract: A high voltage battery cluster, and an overcurrent protection circuit and a switch box of the high voltage battery cluster are provided. The overcurrent protection circuit includes a first fusing module and a second fusing module. Since a withstand current-time curve of the first fusing module is different from a withstand current-time curve of the second fusing module, in a case that an overcurrent fault occurs in a high voltage battery cluster, one fusing module can cause an open circuit in the high voltage battery cluster prior to another fusing module, thereby preventing the high voltage battery cluster from being broken by a large current when an overcurrent fault occurs in the high voltage battery cluster, thus ensuring an electrical safety of the high voltage battery cluster.

Abstract: The present disclosure discloses a positioning method, a processing device, a radiotherapy system and a storage medium, which belong to the field of medical technologies. The method includes: acquiring a three-dimensional body surface image of a patient on a support apparatus after receiving a positioning instruction; determining a first deviation between the three-dimensional body surface image of the patient and a first body surface reference image in each coordinate direction in the three-dimensional coordinate system, based on the three-dimensional body surface image of the patient and the first body surface reference image, so that the support apparatus is movable according to the first deviations in the various coordinate directions until the first deviations are within a preset threshold range after the movement.

Abstract: Provided is a method for processing images. In the method, upon acquiring projection data of an object to be detected, a parsed image is acquired by performing parsing reconstruction on the projection data by calling a first image processing unit. Then a first registered image is acquired by registering the parsed image and a reference image by calling a second image processing unit, and an iterated image is acquired by performing iterative reconstruction on the projection data by calling the first image processing unit.

Abstract: Disclosed is a radiotherapy monitoring system. The radiotherapy monitoring system includes: radiotherapy equipment, wherein the radiotherapy equipment includes a support apparatus for carrying a patient and is provided with one or more isocenters; and one or more stereo cameras, wherein the one or more stereo cameras correspond to the one or more isocenters in a one-to-one correspondence, a shooting range of each stereo camera covers an isocenter corresponding to the stereo camera, and the one or more stereo cameras are configured to acquire three-dimensional surface images of the patient to monitor a movement of the patient based on the three-dimensional surface image.

Abstract: A method and apparatus for position detection, and a radiotherapy system are provided. The radiotherapy system includes: a treatment couch, a positioning apparatus, an optical tracking system and a computer; the positioning apparatus disposed on the treatment couch, and at least one reference point provided on the positioning apparatus; the optical tracking system disposed above the treatment couch and configured to detect relative positioning between a mark point set on a treated part of a patient and the reference point, determine deviation between the relative and reference positions, and send the deviation to the computer. The computer is configured to determine whether to adjust a position of the treatment couch based on the deviation and deviation range. The system provided by the present disclosure avoids the influence of patient movement on the accuracy of treatment, and prevents a treatment beam from damaging normal tissues of the patient.

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 method for processing a medical image. In the method, a processing result is acquired by processing, without acquiring a user operation, an acquired medical image of a target object, and subsequently, the processing result is output in response to acquiring a user operation triggered by a user for viewing a processed medical image.

Abstract: Provided is a method for determining a rotation speed of a gantry. The method includes: acquiring control information of the gantry, wherein the control information of the gantry includes: leaf information and dose information of control points; determining the rotation speed of the gantry and dose rates at the control points based on the leaf information and the dose information of the control points; and adjusting the rotation speed of the gantry based on the dose rates at the control points and a maximum equipment dose rate.