A method for estimating motion of an X-ray focal spot is provided. The acts of the method include acquiring image data by causing X-rays to be emitted from the X-ray focal spot of an X-ray source toward a radiation detector comprising multiple channels, wherein a subset of the channels each have a collimator blade positioned above the respective channel. The acts of the method also include independently estimating X-ray focal spot motion in an X-direction for the X-ray focal spot relative to an isocenter of the radiation detector and in a Y-direction along a direction of the X-rays for the X-ray focal spot relative to the isocenter based on respective channel gains for a first channel and a second channel of the subset of the channels.

A radiography control apparatus includes a storage; a communicator that obtains irradiation information from an irradiation apparatus; and a hardware processor that: upon determining that the communicator obtains the irradiation information before a specific timing, executes image processing based on the irradiation information obtained from the communicator; and upon determining that the communicator does not obtain the irradiation information before the specific timing, executes the image processing based on information stored in advance in the storage.

A nuclear medicine (NM) multi-head imaging system is provided that includes a gantry, plural detector units mounted to the gantry, and at least one processor. The at least one processor is operably coupled to at least one of the detector units, and configured to acquire, via the detector units, imaging information. The imaging information includes edge information and interior information. The edge information corresponds to a contour boundary of tissue and the interior information corresponds to an intermediate portion of the tissue. The least one processor is configured to control the detector units to acquire a proportionally larger amount of imaging information for the contour boundary than for the intermediate portion.

A radiation imaging system includes a hardware processor. The hardware processor calculates an exposure index representative value of a radiation image based on the radiation image including a plurality of frame images. The hardware processor is capable of setting a target value of an exposure index differently for each imaging mode.

An apparatus and method for reducing the blurriness of tomographic (3D) images constructed from a gamma camera system with one or more VASH (variable-angle slant-hole) collimators. A conventional gamma camera with a VASH collimator exhibits a loss of spatial resolution from the fact that the gamma-ray is entering the detector element at an angle other than normal to the surface. This depth dependence of the spatial localization causes a blurring of the spatial resolution, which is dependent on the incident angle relative to the normal, on the thickness of the detector element and on the stopping length of the gamma-ray in the detector element material. The invention provides an apparatus and method for correcting the spatial location where the gamma ray is recorded to improve the spatial resolution of the system.

A collimator according to an embodiment is a collimator for use in an X-ray CT apparatus and includes a collimator module and resin. The collimator module includes a first scattered ray eliminating part and a second scattered ray eliminating part. The resin is provided between the first scattered ray eliminating part and the second scattered ray eliminating part and is configured to hold the first scattered ray eliminating part and the second scattered ray eliminating part.

According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a photon counting detector, and processing circuitry. The X-ray tube radiates X-rays. The photon counting detector detects the X-rays radiated from the X-ray tube and transmitted through a subject. The processing circuitry adjusts a temperature adjustment amount used for regulating a temperature of the photon counting detector according to an imaging mode.

An X-ray imaging detector (102) is proposed, wherein the X-ray imaging detector comprises an X-ray converter (103) for converting X-ray radiation into electrical charges. The X-ray imaging detector further comprises a detector plate (104) for collecting the electrical charges generated by the X-ray converter and for generating an image. In addition, the X-ray imaging detector comprises a structured plate (105) for modulating the intensity of backscattered X-ray radiation, wherein the structured plate is arranged at a side of the detector plate opposite the side of the X-ray converter. Moreover, the X-ray imaging detector comprises a data processing system, which is configured for mitigating image distortions caused by backscattered X-ray radiation. Thereto, the data processing system uses information about the structured plate.

A detector module is provided. The detector module may include a plurality of detector sub-modules. Each of the plurality of detector sub-modules may include a detection layer, at least one data acquisition circuitry, a frame for supporting the detection layer, and a positioning element for assembling the plurality of detector sub-modules. The frame may include a plurality of heat transfer fins that are thermally connected with the at least one data acquisition circuitry for dissipating heat produced by the at least one data acquisition circuitry.

The present invention relates to a system (10) for X-ray dark-field, phase contrast and attenuation image acquisition. The system comprises an X-ray source (20), an interferometer arrangement (30), an X-ray detector (40), a control unit (50), and an output unit (60). An axis is defined extending from a centre of the X-ray source to a centre of the X-ray detector. An examination region is located between the X-ray source and the X-ray detector. The axis extends through the examination region, and the examination region is configured to enable location of an object to be examined. The interferometer arrangement is located between the X-ray source and the X-ray detector. The interferometer arrangement comprises a first grating (32) and a second grating (34). For a first mode of operation: The control unit is configured to control at least one lateral movement transducer (70) to move the first grating or move the second grating in a lateral position direction perpendicular to the axis. The control unit is configured to control the X-ray detector to acquire image data whilst the first grating and/or second grating is moving. During an exposure time of the X-ray detector the first grating and/or second grating has moved a distance less than a period of the first grating and/or second grating. The control unit is configured to control movement of the first grating and/or second grating such that the image data is acquired whilst the first grating and/or second grating is moving. For the first mode of operation the output unit is configured to output one or more of: dark-field image data, phase contrast image data, and attenuation image data.