An image processing apparatus obtains target grid feature information indicating primary radiation transmittance and scattered ray transmittance of a target grid, and imaging grid feature information indicating primary radiation transmittance and scattered ray transmittance of an imaging grid that is used for imaging, and obtains a photographed image obtained through radiography that uses the imaging grid. The image processing apparatus estimates a scattered dose based on a relation between the photographed image, a primary radiation image, and a scattered ray image, the relation being expressed using the primary radiation transmittance and the scattered ray transmittance indicated by the imaging grid feature information, and adjusts a scattered dose of the photographed image based on the estimated scattered dose, the target grid feature information, and the imaging grid feature information.

To provide a technique with which it is possible to make collimator plates resistant to deformation, and reduce position offsets in the collimator plates, a collimator module (1) comprises a plurality of collimator plate sets (2) lined up side by side in a channel direction (CH), wherein each collimator plate set (2) comprises a first collimator plate (3), a second collimator plate (4), and a joint layer (5) disposed between the first collimator plate (3) and second collimator plate (4) for adhesively bonding the first collimator plate (3) and second collimator plate (4) together, and the plurality of collimator plate sets (2) are lined up side by side in the channel direction (CH) with an air layer (20) intervening between adjacent two of the plurality of collimator plate sets (2).

By subjecting a neural network to machine learning using teacher data consisting of learning data and correct answer data, a trained neural network that outputs at least one of a composition of a target subject or a body thickness of the target subject in a case in which at least one target radiation image of the target subject is input is constructed. The learning data includes a standard image acquired by irradiating a standard object of which a thickness and a material are known with radiation in a state in which an object is interposed between the standard object and a radiation detector, an energy characteristic of the radiation, a thickness and a material of the object, and an imaging condition in a case in which the standard image is acquired. The correct answer data includes at least one of a composition or a body thickness of a subject derived from at least one radiation image of the subject by using the standard image, the energy characteristic of the radiation, the thickness and the material of the object, and the imaging condition.

A detector assembly for a CT system includes a first support structure having a first plurality of mini-module support surfaces, each of the first plurality of mini-module support surfaces being tangent to a hypothetical sphere that is formed having a center of the hypothetical sphere positioned at a focal spot of the CT system, the first plurality of mini-module support surfaces at a first distance from the center of the hypothetical sphere, and a second support structure positioned next to the first support structure and having a second plurality of mini-module surfaces, the second support structure being angled in an X-Y plane with respect to the first support structure such that the second plurality of mini-module surfaces are tangent to the hypothetical sphere and at the first distance from the center of the hypothetical sphere.

A dynamic image processing device including: a receiver configured to receive order information of dynamic image photography; an acquirer configured to acquire a dynamic image that is obtained by performing the dynamic image photography; and a hardware processor configured to select a scattered radiation component removal process to be used in the dynamic image, based on the order information.

A bone information acquisition apparatus comprises: an X-ray image acquisition unit configured to acquire an X-ray image with a subject; an identifying unit configured to identify a mounted state of a grid that removes scattered rays; and a bone information acquisition unit configured to acquire bone information that evaluates a state of a bone of the subject included in the X-ray image in accordance with the mounted state of the grid.

A detector sub-assembly for a CT system includes a detector module that includes a mount block having a top planar surface, a Y-axis planar surface that is parallel with the top planar surface, an X-axis planar surface that is orthogonal to the first Y-axis planar surface, and an aperture passing through the X-axis planar surface. The module includes a substrate having a pixelated photodiode positioned thereon, and a two-dimensional anti-scatter grid (ASG) positioned on the pixelated photodiode. The detector sub-assembly includes a support structure including a Y-axis mount surface and an X-axis mount surface, and a second aperture passing through the X-axis mount surface, a mounting screw having an outer diameter that is smaller than an inner diameter of the aperture and passing through the aperture and into the second aperture when the Y-axis planar surface is on the Y-axis mount surface.

In order to improve the mechanical stability of an X-ray grating with top bridges for X-ray dark field imaging and/or X-ray phase contrast imaging, it is proposed to reduce or prevent the undesired high stress on the top bridges by a change in the manufacturing process. Specifically, it is proposed to electroplate the top bridges after the bending. In other words, the electroplating of the top bridges is performed on the bent geometry.

Disclosed herein is an x-ray interferometer for x-ray phase contrast imaging including an x-ray source, an x-ray source grating, two x-ray phase gratings, an x-ray analyzer grating and an x-ray detector. An alternative interferometer includes a periodically structured x-ray source, two x-ray phase gratings, an x-ray analyzer grating and an x-ray detector. The phase gratings are placed much closer to the x-ray detector than to the x-ray source and the image object is positioned upstream and close to the phase gratings to achieve high sensitivity and large field-of-view simultaneously.

A system for multi-mode breast x-ray imaging which comprises a compression arm assembly for compressing and immobilizing a breast for x-ray imaging, an x-ray tube assembly, and an x-ray image receptor is provided. The system is configured for a plurality of imaging protocols and modes.