Abstract: A cabin type beam irradiation apparatus and a method for performing beam irradiation method are provided. According to an embodiment, the beam irradiation apparatus comprises: a gantry having a hollow frame structure, the hollow portion of which being formed as a treatment cabin; a first guide rail, which is fixedly arranged on the frame; a treatment head, which is slidably arranged on the first guide rail; and an entry door, which may be openably and closably arranged on the gantry. The beam irradiation apparatus can perform radiotherapy on patients in a standing or sitting posture. Imaging guidance is additionally used to ensure the accuracy of the treatment position, and thus highly focused radiation is achieved by (non)coplanar radiotherapy. Further, the apparatus may have self-shielding function, and can reduce the difficulty and cost for construction of a machine room.

Abstract: Disclosed herein is a radiation detector, comprising: an avalanche photodiode (APD) with a first side coupled to an electrode and configured to work in a linear mode; a capacitor module electrically connected to the electrode and comprising a capacitor, wherein the capacitor module is configured to collect charge carriers from the electrode onto the capacitor; a current sourcing module in parallel to the capacitor, the current sourcing module configured to compensate for a leakage current in the APD and comprising a current source and a modulator; wherein the current source is configured to output a first electrical current and a second electrical current; wherein the modulator is configured to control a ratio of a duration at which the current source outputs the first electrical current to a duration at which the current source outputs the second electrical current.

Abstract: Methods and systems for correcting position errors for a multi-leaf collimator (MLC) are provided. A method may include determining a first position for each of the plurality of leaves. The information associated with the first position may include a first movement direction and a first angle. A movement of the each of the plurality of leaves along the first movement direction may be configured to move toward or away from a center of the radiation field. The method may also include determining an offset value associated with the first position based on the first angle and the first movement direction; and determining a target position of the each of the plurality of leaves based on the offset value.

Abstract: A method of defining at least one scan parameter for an x-ray scan of a single crystal structure, the method comprising: determining a target orientation of the structure for the scan; and defining different non-zero levels of x-ray exposure for different parts of a scan area based on either or both of the target orientation and characteristics of the structure; and, defining the scan area so that substantially all x-rays of the scan are directed to the structure in the target orientation.

Abstract: Disclosed herein is a method, comprising: for i=1, . . . , M, sending a pencil radiation beam (i) toward an image sensor, wherein the pencil radiation beam (i) is incident on an incident region (i) on an active area of the image sensor, wherein the pencil radiation beam (i) is aimed at a target region (i) on the active area, wherein M is a positive integer, for i=1, . . . , M, determining an offset (i) between the incident region (i) and the target region (i).

Abstract: A system, medium, and method including obtaining a plurality of positions for multiple components defined by a plan; obtaining a set of constraints that express limitations for the multiple components at the plurality of positions, the constraints being applicable to a plan where the multiple components synchronously change their positions with time to traverse a prescribed sequence of the plurality of positions, at least one of the multiple components being further constrained to change its position over time by staying within a predefined tolerance to a predefined smooth function of position over time between different positions; determining a trajectory of position and a minimum duration in which the multiple components completely synchronously traverse the prescribed sequence of positions while satisfying the constraints for the multiple components; and generating a record of the determined trajectory of position and the minimum duration for the plurality of components.

Abstract: A test device for the irradiation of products which are fed into a housing along at least two tracks. At least one separate sensor is provided for each track in order to separately monitor the arrival at a target position selected individually for each track preferably within the housing of the test device.

Abstract: A radiotherapy apparatus for an animal comprises a treatment part including an accommodation space for placing an animal, an irradiation part including an electron generator and a linear accelerator coupled to one side of the electron generator and disposed in a direction perpendicular to the treatment part, the linear accelerator being configured to emit radiation toward the treatment part, and an image acquisition part located at a preset interval from the treatment part along an irradiation direction of the radiation and configured to obtain an image of an irradiation area when the radiation is applied, wherein the radiation has an output of 1 MeV to 2 MeV so as to be applied to a diseased part located within a predetermined distance range from epidermis of the animal.

Abstract: A sample inspection apparatus includes a source of electromagnetic radiation, a beam former for producing a plurality of coaxial and substantially conical shells of radiation, a detection surface and a set of conical shell slot collimators. Each conical shell has a different opening angle. The detection surface is arranged to receive diffracted radiation after incidence of one or more of the conical shells upon the sample to be inspected. The set of conical shell slot collimators is provided at or close to the detection surface which each stare at different annular regions of different corresponding conical shells.

Abstract: A medical information processing apparatus according to an embodiment includes a processor. The processor acquires an examination room image obtained by capturing the inside of an examination room in which a medical imaging apparatus including a movement mechanism is installed. The processor specifies identification information of a target object depicted in the examination room image using the examination room image. The processor specifies three-dimensional shape data corresponding to the identification information of the target object using the identification information of the target object. The processor specifies the position of the three-dimensional shape data in a virtual three-dimensional space using depth information indicating distance from an examination-room image capturing device to the target object depicted in the examination room image.

Abstract: Various methods and systems are provided for a set of devices for an imaging system. In one example, the set of devices includes a first device configured to obtain a first set of image data and a second device configured to obtain a second set of image data along at least one dimension. The first and second sets of data may be compiled to generate a field-of-view (FOV) preview.

Abstract: An x-ray treatment system includes an electron beam generator configured to generate an electron beam and an x-ray treatment head comprising an array of pixel source cells including side walls defining an x-ray transmissive interior. The side walls include an x-ray absorptive material. A target element is positioned to, when impacted by the electron beam, generate x-ray photon radiation within the x-ray transmissive pixel source cell interior. An electron beam control system includes a controller configured to control responsive to a treatment plan at least one of the direction and intensity of the electron beam to a particular one of the pixel source cells, and then responsive to the treatment plan to control at least one of the direction and intensity of the electron beam to at least one additional pixel source cell. A method of treating a patient with x-ray photon radiation is also disclosed.

Abstract: A radiotherapy system includes X-ray imaging apparatuses that obtain an X-ray image of the patient on a reference plane, and a position determination apparatus. The position determination apparatus calculates parameters of a region estimation model, using, as input data, a reference fluoroscopic image obtained before radiotherapy, and also using, as teacher data, a reference ROI image obtained with respect to the reference fluoroscopic image before radiotherapy. During radiotherapy, the position determination apparatus estimates a region of interest with respect to the X-ray image and a DRR image, based on the parameters and the X-ray image, determines a degree of matching between the X-ray image and the DRR image for the region of interest while virtually changing a relative position/orientation relationship between a CT image and the reference plane, and determines an amount of deviation in position/orientation between the patient and the CT image.

Abstract: Various methods and systems are provided for x-ray tube conditioning for a computed tomography imaging method. In one embodiment, x-ray may be generated in an x-ray tube of a radiation source prior to a diagnostic scan to warmup the x-ray tube to a desired temperature for the diagnostic scan. The power delivered to the x-ray tube during warmup may be adjusted in a closed loop system based on an initial temperature of the x-ray tube and the desired temperature for the diagnostic scan. During tube warmup, by placing a blocking plate coupled to a collimator blade in a path of the x-ray beam, the x-ray beam may be blocked from exiting a collimator.

Abstract: A computer-implemented method for determining a flow rate for a given vessel includes obtaining, via a processor, dynamic three-dimensional (3D) images of a subject utilizing nuclear medicine imaging. The method also includes obtaining, via the processor, injection parameters for a radiotracer bolus injected into the subject via an automated injector. The method further includes generating, via the processor, time activity curves (TACs) for the radiotracer bolus from the 3D images. The method even further includes estimating, via the processor, the flow rate for the given vessel based on a morphology of the one or more TACs and the injection parameters.

Abstract: A method for evaluating an array of high aspect ratio (HAR) structures on a sample includes illuminating the sample with an x-ray beam along a first axis parallel to within two degrees to the HAR structures in the array and sensing a first pattern of small angle x-ray scattering (SAXS) scattered from the sample while illuminating the sample along the first axis. The sample is illuminated with the x-ray beam along a second axis that is oblique to the HAR structures in the array, and a second pattern of the SAXS scattered from the sample is sensed while illuminating the sample along the second axis. Information is extracted with respect to the HAR structures based on the first and second patterns.

Abstract: A radiotherapy apparatus for an animal comprises a treatment part including an accommodation space for placing an animal, an irradiation part including an electron generator and a linear accelerator coupled to one side of the electron generator and disposed in a direction perpendicular to the treatment part, the linear accelerator being configured to emit radiation toward the treatment part, and an image acquisition part located at a preset interval from the treatment part along an irradiation direction of the radiation and configured to obtain an image of an irradiation area when the radiation is applied, wherein the radiation has an output of 1 MeV to 2 MeV so as to be applied to a diseased part located within a predetermined distance range from epidermis of the animal.

Abstract: X-ray detectors for generating digital images are disclosed. An example digital X-ray detector includes: a scintillation screen; a reflector configured to reflect light generated by the scintillation screen; and a digital imaging sensor configured to generate a digital image of the light reflected by the reflector.

Abstract: A medical image diagnosis apparatus according to an embodiment of the present disclosure includes: a gantry, one or more columns, a processing circuitry, and, and a supporting and moving mechanism. The gantry includes an imaging system related to imaging a patient. The one or more columns are each configured to support the gantry so as to be movable in a vertical direction. The processing circuitry generates an image on the basis of an output from the imaging system. The supporting and moving mechanism is configured to support the patient from underneath, while being installed so as to be movable in a direction intersecting the moving direction of the gantry. The processing circuitry controls the moving of the supporting and moving mechanism.

Abstract: An imaging apparatus includes a camera to capture a camera image of a target disposed on an examination table; an X-ray source to generate and radiate X-rays; a memory to store imaging protocols; a display; and a controller. The controller is configured to receive information regarding a selection of an imaging protocol, identify a position of an imaging region of the target based on the camera image, the imaging region corresponding to the selection of the imaging protocol and the camera image being acquired with the examination table at a first distance from the X-ray source, control the display to display the camera image of the target and an indicator indicating the imaging region on the camera image based on the identified position, and control the X-ray source to radiate the X-rays toward the target disposed on the examination table at a second distance from the X-ray source.