Abstract: Provided is a support arm, including a guide assembly configured to be connected to a gantry of a radiotherapy equipment; a support bracket movably connected to the guide assembly and configured to support a detector; and a drive assembly connected to the support bracket and configured to drive the support bracket to move on the guide assembly.

Abstract: The present disclosure provides a radiation therapy device and system. The radiation therapy device includes a first treatment head and a second treatment head. A beam emitted from the second treatment head intersects with a beam emitted from the first treatment head at an intersection point. The first treatment head is an X-ray treatment head, and the second treatment head is an X-ray treatment head, a multi-source focusing treatment head, or an intensity-modulated treatment head. The radiation therapy device may increase a dose rate at the intersection point.

Abstract: The present disclosure provides a collimating body and a multi-source focusing radiation therapy head. The collimating body includes a first collimating portion and a second collimating portion. The first collimating portion and the second collimating portion are arranged side by side and closely fixed. The first collimating portion includes a first collimating hole set, and the second collimating portion includes a second collimating hole set. The first collimating portion and the second collimating portion are able to move oppositely in a direction perpendicular to a side-by-side direction, so as to align or stagger the first collimating hole set and the second collimating hole set.

Abstract: A radiotherapy equipment is provided. The radiotherapy equipment comprises at least two radiation apparatuses, the radiation apparatuses are configured to be capable of emitting radiation beams, the radiation beams emitted by at least two of the radiation apparatuses intersect at an intersection point, the radiation apparatuses are rotatable circumferentially about a rotation axis, and radiation positions of at least two of the radiation apparatuses are positioned at different cross-sections with respect to the rotation axis.

Abstract: A multi-leaf collimator includes a driving component, a controller and n leaf-group layers, where n is an integer greater than or equal to 2, wherein each leaf-group layer includes one group of leaves or two opposing groups of leaves, each group of leaves includes a plurality of leaves, each of the leaves includes a front end surface and a rear end surface which are opposite to each other, and each of the leaves is movable so that the front end surfaces of the leaves in the multiple leaf-group layers form a variable-shaped region that allows beams to pass through; and the rear end surface of the leaf is connected to the driving component, and the controller is configured to control the driving component to drive the leaf to move.

Abstract: An anti-collision apparatus comprises an anti-collision cover and a detection portion. The detection portion is provided outside the bottom end of the anti-collision cover along the axial direction of the anti-collision cover, and an axial clearance is provided between the detection portion and the anti-collision cover. The detection portion is configured to collect a trigger signal and output a collision signal according to the trigger signal; the trigger signal comprises a mechanical trigger signal or an electromagnetic trigger signal generated in the case that the axial clearance is reduced to a target value.

Abstract: A medical image reconstruction method includes: obtaining real projection data collected by a medical imaging device; obtaining an inverse matrix corresponding to the medical imaging device that is physically stored in advance, in which the inverse matrix is obtained by performing an inverse operation based on a system matrix corresponding to the medical imaging device, and the system matrix indicating a geometrical relationship between projection rays of the medical imaging device at each view angle and of reconstructed image pixels; and determining a reconstructed image of the real projection data according to the real projection data and the inverse matrix. By storing a large inverse matrix of the system matrix, rapid image reconstruction may be achieved through the inverse matrix and the real projection data, reconstruction efficiency of a medical image may be improved, and wide application and development of iterative reconstruction technology in clinical practice may be promoted.

Abstract: A method of making a treatment plan with a treatment planning system and radiotherapy system are provided. The method includes: acquiring a preset dose distribution scheme; generating at least one radiation dose distribution scheme to be used with the treatment planning system, wherein the treatment plan system is adapted to at least one of beam energy of the radiotherapy system, a size of a collimator of the radiotherapy system, a radiation angle and radiation time of the radiotherapy system; and comparing the at least one radiation dose distribution scheme to be used with the preset dose distribution scheme, and determining, among the at least one radiation dose distribution scheme, a radiation dose distribution scheme that is the closest to the preset dose distribution scheme to make the treatment plan.

Abstract: A source storing apparatus, source guiding system and source guiding method are provided. The source storing apparatus comprises: a source tank and a shielding plug, the source tank being provided with an opening and an accommodating cavity, the accommodating cavity being configured to accommodate a cobalt source box, the shielding plug being configured to seal an opening of the accommodating cavity; wherein a first connecting structure is provided on the cobalt source box; a second connecting structure is provided on an outer side of the shielding plug, a pickup structure is provided on an inner side of the shielding plug, and the first connecting structure is detachably connected to the pickup structure. The structure of the source storing apparatus is simplified; the installation and operation processes are simple with reduced operation requirements, and are time-consuming and labor-consuming. The cost of the source guiding apparatus is also greatly reduced.

Abstract: A method for focusing an X-ray method is provided and the method includes: emitting an electron beam by an electron beam generator; shooting the electron beam onto a target to generate an X-ray beam; and causing the X-ray beam to pass through each collimating channel of a same collimating channel group of a collimator to focus on a focus of the collimating channel group. The collimator includes at least one collimating channel group. Each collimating channel group includes at least two collimating channels. The same collimating channel group has one focus or a plurality of focuses.

Abstract: A method for collision detection of a radiotherapy equipment includes determining a collision-prone position of a target to be detected; and determining whether the target to be detected having a risk of collision with the radiotherapy equipment according to collision risk analysis data that is capable for reflecting a magnitude relationship between a first distance and a second distance. The first distance is a distance from the collision-prone position to a reference position of the radiotherapy equipment, and the second distance is a minimum distance between a target component of the radiotherapy equipment and the reference position. A distance between the reference position and the target component of the radiotherapy equipment is relatively constant when the target component of the radiotherapy equipment rotates around a rotation axis.

Abstract: Disclosed a leaf positioning device (100) for a multi-leaf collimator, comprising: a plurality of positioning signal transmitters which are in the leaf guide rail box, wherein the plurality of positioning signal transmitters are arranged opposite to a first end surface of leaves of the multi-leaf collimator; a plurality of positioning signal receivers which are in the leaf guide rail box and corresponding to the plurality of positioning signal transmitters, wherein the plurality of positioning signal receivers are arranged opposite to a second end surface of the leaves of the multi-leaf collimator; wherein, the plurality of positioning signal transmitters are configured to transmit positioning signals to the plurality of positioning signal receivers, and the plurality of positioning signal receivers are configured to generate output signals according to the positioning signals; a positioning device which is connected to each of the plurality of positioning signal receivers, wherein the positioning device is c

Abstract: A method and system of controlling a multi-leaf collimator, wherein steps of the method includes: receiving treatment data, and the treatment data includes position information of N treatment points, conformal position information of N treatment points and radiation field shapes of N treatment points; controlling a treatment head to a conformal position of a first treatment point, and controlling the multi-leaf collimator to begin to conform to a radiation field shape of the first treatment point so as to start a treatment of the first treatment point; controlling the treatment head to a conformal position of a Kth treatment point, and controlling the multi-leaf collimator to begin to conform to a radiation field shape of the Kth treatment point so as to start a treatment of the Kth treatment point; carrying out the described operations repeatedly until the conformation of the radiation field shape and the treatment of all treatment points are completed.

Abstract: A radiotherapy system includes radiotherapy equipment and at least one source storage tank. The radiotherapy equipment includes a treatment head and a radioactive source component, the treatment head includes a first opening and an accommodation space, and the radioactive source component is located in the accommodation space of the treatment head; the source storage tank includes a tank body and a tank cover, the tank body includes a second opening and an accommodation space capable of accommodating the radioactive source component, and the tank cover is configured to close the second opening; the second opening of the source storage tank is connected to the first opening of the radiotherapy equipment, and the radioactive source component is movable between the treatment head and the source storage tank.

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: The present disclosure discloses a radiotherapeutic device. The radiotherapeutic device comprises a gantry, at least two therapeutic heads, a first detector and a slide driving unit. The slide driving unit comprises a sliding guide rail, a driving apparatus and a movable block. The first detector is fixed on the movable block and is driven by the movable block via the driving apparatus to slide along the sliding guide rail to different positions to receive radiation beams emitted by therapeutic heads.

Abstract: The treatment couch includes a couch panel, a main supporting structure, an auxiliary supporting structure and a supporting beam. Both ends of the supporting beam are respectively connected to the main supporting structure and the auxiliary supporting structure.