Abstract: The present disclosure relates to immunogenic compositions comprising at least one Yersinia pestis (Y. pestis) antigen, an aluminum salt adjuvant, and an oligonucleotide comprising an unmethylated cytidine-phospho-guanosine (CpG) motif. The immunogenic compositions are suitable for stimulating an immune response against Y. pestis in a subject in need thereof. The present disclosure also relates to kits and methods using the immunogenic compositions, or two separate compositions which together comprise the antigen, the aluminum salt adjuvant, and the oligonucleotide.

Abstract: A radiation treatment head can include: a radiation source and a primary collimator, wherein the radiation source is configured to emit a radioactive beam; wherein the primary collimator is provided with a plurality of primary collimation channel groups; each of the primary collimation channel groups includes at least one primary collimation channel; and the radiation source and the primary collimator are movable relative to each other, so that the beam emitted from the radiation source is permissible to pass through any one of the primary collimation channels; and wherein the beam emitted from the radiation source, after passing through primary collimation channels of different primary collimation channel groups, forms fields with different sizes of areas on a reference plane.

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: 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: 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: 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.

Abstract: Disclosed herein is a cutting device. The cutting device includes a first subassembly, a second subassembly, and a fastener. The first subassembly has a first blade and a handle. The first blade includes a circular opening. The second subassembly has a second blade and a handle. The second blade includes an elongated opening. The fastener is connected between the circular opening and the elongated opening.

Abstract: Embodiments of the present disclosure provide a method, controller, and system for controlling a dose in radiotherapy of a patient and a computer storage medium. The method includes: starting to time radiation of rays or calculate radiation dose of the rays before a source carrier is aligned with a collimator in a process of aligning of the source carrier and the collimator; irradiating rays to a target area of the patient through the collimator till the radiation dose of the rays received by the patient is equal to a radiation dose required for the radiotherapy. Therefore, the radiation dose of the rays received by the patient in an entire treatment process may reach the radiation dose actually required during the radiotherapy, thereby improving a radiation dose control accuracy and a treatment effect during the radiotherapy.

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: 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 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: 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 radiation treatment device is provided. The device includes an imaging unit and a single radiotherapy unit adjacent to a second end of the imaging unit. The imaging unit includes a first opening at a first end of the imaging unit adapted to receive a patient; at least one imaging source; and at least one imager arranged opposite the imaging source. The imaging source and the imager are rotatable about the rotational axis. The radiotherapy unit includes a source body carrying radioactive sources and a collimator having collimation channels. The collimation channels permit treatment beams emitted by the radioactive sources to be projected inside the imaging unit and focused at an intersection point located within an imaging beam of the imaging unit. The source body and the collimator are arranged concentric about the rotational axis and close a second opening at the second end.

Abstract: A radiotherapy device and a control driving method thereof are provided. The radiotherapy device includes a radiation source apparatus having a plurality of radiation sources, a source carrier and a collimator. The source carrier includes a source box and a source box region conforming to a shape of the source box, the source box is detachably fixed at the source box region, the plurality of radiation sources are mounted in the source box, the source box is provided with a first connecting part, the source carrier is provided with a second connecting part, and the first connecting part is configured to connect the second connecting part.

Abstract: A voltage stabilizing system of a switching direct current (DC) power supply equipment is provided. DC power outputted by battery modules and a rectifier is boosted, bucked, or boosted and bucked by a voltage stabilizer circuit, and is then distributed to a plurality of external electronic devices or the battery modules. The voltage stabilizer circuit includes a main voltage stabilizer circuit and one or more slave voltage stabilizer circuits. The main voltage stabilizer circuit controls the slave voltage stabilizer circuits, and distributes the DC power respectively to the main voltage stabilizer circuit and the slave voltage stabilizer circuits. Circuit boards of the main voltage stabilizer circuit and the slave voltage stabilizer circuits are pluggably installed in a machine cabinet of the switching direct current power supply equipment.

Abstract: A box top opener employs a trapezoidal ceramic blade having a cutting edge which is positionable at multiple positions. A knob is rotatable to extend and retract the blade. A guide projects from a front of the cutter body to provide a guide surface engageable against the top of a box. In one embodiment, a blade carrier has a follower which traverses a spiral track for displacing the blade.

Abstract: A microwave power control device can include: a microwave signal generator and a signal distribution circuitry connected to the microwave signal generator. The microwave signal generator is configured to generate microwave signals and transmit the microwave signals to the signal distribution circuitry; and the signal distribution circuitry is configured to distribute the microwave signals to n accelerating tubes according to a target microwave power distribution ratio, n being an integer greater than or equal to 2.

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.