Abstract: A method for treatment planning for a radiation therapy system includes setting a number of objectives reflecting clinical criteria are set for the regions of interest and generating radiation dose profiles to be delivered to these regions of interest. A convex optimization function for optimizing the delivered radiation based on the objectives is provided and dose profiles for specific treatment configurations including beam shape settings for the radiation dose profiles are calculated using the convex optimization function. Treatment plans including determining the radiation dose profiles to be delivered during treatment based on the treatment configurations are created and an optimal treatment plan that satisfies the clinical criteria is selected.

Abstract: A method of performing a radiological biopsy and associated system includes scanning a living human subject with a CT scanner to locate coordinates of an area of potential pathology and then using the coordinates to direct synchrotron radiation to a location at, or proximate the coordinates to obtain a high-resolution image of the area of potential pathology. The CT scan is accomplished with a CT scanner such as a C-Arm, vertical or horizontal CT scanner. A synchrotron radiation source emits synchrotron radiation through the subject and is processed by a processing system. The method and system allow for concurrent or sequential scanning of the subject by the CT scanner and synchrotron radiation scanner. The resulting images provide histological resolution of areas of potential pathology.

Abstract: An image generation method of an interior CT includes the following steps: a step for obtaining interior CT projection data by measuring quantum beams passing through a region of interest (ROI) in an inside of photographing object in a geometrical system for CT measurement; a step for obtaining partial entire projection data by measuring quantum beams passing through an entire of said photographing object from a segment in an outside of said photographing object in said geometrical system for CT measurement; and a processing step for exactly reconstructing said ROI upon basis of said interior CT projection data obtained and said partial entire projection data.

Abstract: Provided is an X-ray CT apparatus including an X-ray irradiation unit that rotates around a placement portion on which an irradiation target is placed and emits X-rays; an X-ray detection unit that detects the X-rays emitted from the X-ray irradiation unit and passed through the irradiation target; and an image reconstruction unit that reconstructs a tomographic image of the irradiation target based on image data of the X-rays detected by the X-ray detection unit, in which the image reconstruction unit calculates a scattered ray component scattered in each of a plurality of three-dimensional spaces obtained by partitioning the irradiation target by a predetermined size among the X-rays detected by the X-ray detection unit in consideration of an atom number density per unit volume in each of sections included in the plurality of three-dimensional spaces and an atomic number, and reconstructs the tomographic image in consideration of the scattered ray component.

Abstract: A method is for producing a scattered beam collimator starting from a lower side and extending in a build-up direction as far as an upper side, and having a large number of X-ray absorbing partitions, and in which pass-through channels for unscattered X-ray radiation are embodied between the partitions. A lithographic process is used, by which the partitions of the scattered beam collimator are formed from a photoresist into which an X-ray absorbing material is mixed.

Abstract: The present invention includes new medical techniques involving radiation and electromagnetic actuation of reagents deployed and directed within bodily fluids (e.g., the bloodstream, digestive tract, or lymph ducts) of a patient. In one aspect of the invention, a medical reagent and/or particle is provided with multiple dipoles, oriented differently in three-dimensional space, allowing a remote control system to drive the acceleration and three-dimensional orientation of the medical agent or particle according to a three-dimensional path. In some embodiments, the medical reagent and/or particle is energized remotely to an activation energy level, and then driven into the treatment target. The design of each small-scale machine may include different sub-devices and electrostatic charges or magnetic dipoles, at different surface or internal locations.

Abstract: A method and a system are for image noise reduction. In an embodiment, the method includes producing a recorded image; establishing an amount of noise of the recorded image; decomposing the amount of noise into a number of N frequency-dependent noise components for N frequency bands, the number of N frequency-dependent noise components including respective data points respectively reproducing noise, of the amount of noise in the recorded image, for the respective frequency bands of the N frequency bands; examining the number of N frequency-dependent noise components for outlier data points, where an intensity lies outside a range of values, and forming moderated noise components by moderation of values of the outlier data points established in the examining of the number of N frequency-dependent noise components; and subtracting the moderated noise components from the recorded image.

Abstract: Disclosed herein is a radiation detector comprising: a layer of quantum dots configured to emit a pulse of visible light upon absorbing a radiation particle; an electronic system configured to detect the radiation particle by detecting the pulse of visible light.

Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain initial temperature information of a photon counting detector before a main scan, information about the shape of a subject, and a scan condition of the main scan. The processing circuitry is configured to estimate a temperature change of the photon counting detector to be observed when the main scan is performed, on the basis of the initial temperature information, the information about the shape of the subject, and information about the scan condition of the main scan. The processing circuitry is configured to judge whether or not it is possible to perform the main scan, on the basis of the temperature change and the initial temperature information.

Abstract: A method and image generating unit are for capturing at least two tomosynthesis images of an object undergoing examination offset by an angle of examination. In an embodiment the method includes a first and second capture of a plurality of first projection images along the linear trajectory, via X-ray source and the X-ray detector capturing the object undergoing examination in a first plane of capture and in a second capture plane different from the first capture plane, the first and second capture planes forming the angle of examination; determination of a first slice image dataset based upon the first projection images and of a second slice image dataset based upon the second projection images; and registration of the first slice image dataset and the second slice image dataset.

Abstract: A method may include obtaining a first acquisition time period related to a scan of a first modality performed on an object. The method may also include obtaining one or more second acquisition time periods related to a scan of a second modality performed on the object. The method may also include obtaining, based on the first acquisition time period and the one or more second acquisition time periods, target data of the object acquired in the scan of the first modality. The method may also include generating one or more target images of the object based on the target data.

Abstract: An X-ray CT apparatus enables accurate determination of a scan end position and includes a rotating plate that rotates an X-ray source and an X-ray detector, oppositely provided to the X-ray source, to detect the X-ray transmitted through and around the subject. A bed for the subject moves with respect to the rotating plate, to change a scan position; and a tomographic image is generated in the scan position based on output from the X-ray detector. A storage holds a region ratio threshold value previously determined in a scan end position. A region extraction unit extracts a predetermined region from the tomographic image generated during scanning; and a comparison determination unit determines whether or not the scan position has arrived at the scan end position based on comparison between a region ratio calculated by using the region and the threshold value.

Abstract: An X-ray fluorescence spectrometer of the present invention includes a counting time calculation unit (13) configured to: by a predetermined quantitative calculation method, determine each of quantitative values by using reference intensities of one standard sample and repeatedly perform a procedure of determining each of the quantitative values in a case where only a measured intensity of one of measurement lines is changed by a predetermined value, to calculate a ratio of a change in each of the quantitative values to the predetermined value as a quantitative-value-to-intensity change ratio, the one of the measurement lines having the measured intensity to be changed being different on each repetition of the procedure; and use quantitative-value-to-intensity change ratios calculated thereby for all the measurement lines to calculate a counting time for each of the measurement lines from a quantification precision specified for each of the quantitative values.

Abstract: In one embodiment, an automated high-speed X-ray inspection tool may emit, by an X-ray source, an X-ray beam to an object of interest with a portion of the X-ray beam penetrating through the object of interest. The automated high-speed X-ray inspection tool may capture, by an X-ray sensor, one or more X-ray images of the object of interest based on the portion of the X-ray beam that penetrates through the object of interest. Each of the X-ray images may be captured with a field of view of at least 12 million pixels.

Abstract: A method and system is disclosed for acquiring image data of a subject. The image data can be collected with an imaging system with at least two different energy characteristics. The image data can be reconstructed using reconstruction techniques.

Abstract: An x-ray imaging apparatus and a method of controlling the x-ray imaging apparatus are provided. The x-ray imaging apparatus includes x-ray detectors, and a user interface configured to display sizes of the x-ray detectors, and display a modality in which an x-ray detector, among the x-ray detectors, is usable, while a size of the x-ray detector is displayed.

Abstract: An X-ray diagnosis apparatus according to an embodiment includes processing circuitry configured: to acquire a two-dimensional X-ray image of an examined subject imaged in a first imaging process; to designate at least one track on which an X-ray generator is to move in a second imaging process to be performed after the first imaging process; and to perform a predicting process of predicting, on the basis of the two-dimensional X-ray image and the track, an artifact that is to occur when the second imaging process is performed by using the track.

Abstract: According to one embodiment, an X-ray diagnosis apparatus includes an X-ray tube, an X-ray detector, an operating unit, and processing circuitry. The processing circuitry determines a focal-spot size of X-rays in second moving picture imaging after first moving picture imaging, based on an output of the X-ray detector in the first moving picture imaging, and determines a focal-spot size of X-rays in third moving picture imaging after the second moving picture imaging, based on an output of the X-ray detector in the second moving picture imaging.

Abstract: Various methods and systems are provided for multi-material decomposition for computed tomography. In one embodiment, a method comprises acquiring, via an imaging system, projection data for a plurality of x-ray spectra, estimating path lengths for a plurality of materials based on the projection data and calibration data for the imaging system, iteratively refining the estimated path lengths based on a linearized model derived from the calibration data, and reconstructing material-density images for each material of the plurality of materials from the iteratively-refined estimated path lengths. By determining path-length estimates in this way without modeling the physics of the imaging system, accurate material decomposition may be performed more quickly and with less sensitivity to changes in physics of the system, and furthermore may be extended to more than two materials.

Abstract: A radiation detection apparatus can include a scintillator to emit scintillating light in response to absorbing radiation; a photosensor to generate an electronic pulse in response to receiving the scintillating light; an analyzer to determine a characteristic of the radiation; and a housing that contains the scintillator, the photosensor, and the analyzer, wherein the radiation detection apparatus to is configured to allow functionality be changed without removing the analyzer from the housing. The radiation detection apparatus can be more compact and more rugged as compared to radiation detection apparatuses that include a photomultiplier tube.