Provided are a mammography apparatus, a control device, a mammography apparatus control method, and a mammography apparatus control program that can effectively reduce the subject's pain caused by the compression of the breast by a compression plate.

A mammography apparatus includes a compression plate that compresses a breast, a moving unit that moves the compression plate in a compression direction in which the breast is compressed and a decompression direction in which the breast is decompressed, a radiation source that emits radiation, and a control unit that controls the moving unit such that the compression plate is moved to a first position in the compression direction and is moved to a second position in the decompression direction and performs control such that the radiation is emitted from the radiation source to the breast in a state in which the compression plate is located at the second position.

There is provided a radiographic imaging apparatus capable of facilitating a comparative radiological interpretation of symmetric portions or a temporal comparative radiological interpretation of a same imaging target. The radiographic imaging apparatus includes an image control unit configured to cause a display unit configured to display a plurality of divided screens to display a first radiographic image of a first imaging target on a first divided screen of the plurality of divided screens. The image control unit causes a radiographic image of the first imaging target that is captured at a different time from the first radiographic image or a radiographic image of a second imaging target that is a symmetric imaging target of the first imaging target to be displayed on a second divided screen of the plurality of divided screens as a second radiographic image.

A mammography apparatus includes: a compression plate that compresses a breast; a moving unit that moves the compression plate in a compression direction in which the breast is compressed and a decompression direction in which the breast is decompressed; a radiation source that emits radiation; and a control unit that controls the moving unit such that the compression plate is moved to a first position in the compression direction, is moved to a second position where the position of the compression plate is changed from the first position by a predetermined variation or more in the decompression direction, and is stopped and performs control such that the radiation is emitted from the radiation source to the breast.

A mammography apparatus includes: a moving unit that moves a compression plate in a compression direction in which the breast is compressed and a decompression direction in which the breast is decompressed; a radiation source; a pressure sensor that is used to measure a compression pressure which is a compression force of the compression plate per unit area; and a control unit that controls the moving unit such that the compression plate is moved to a first position where the compression pressure measured by the pressure sensor is a first compression pressure in the compression direction and is moved to a second position where the compression pressure measured by the pressure sensor is a second compression pressure in the decompression direction and performs control such that radiation is emitted from the radiation source in a state in which the compression plate is located at the second position.

An information processing apparatus includes at least one processor that is configured to: acquire a low-energy image captured by a radiography apparatus by emitting radiation having first energy to a subject into which a contrast medium has been injected, and each of a plurality of high-energy images captured by the radiography apparatus at different timings by emitting radiation having second energy higher than the first energy to the subject into which the contrast medium has been injected, and generate a plurality of difference images showing a difference between the low-energy image and each of the plurality of high-energy images.

A control apparatus includes at least one processor that is configured to: acquire an elapsed time from injection of a contrast medium into a subject for which a radiation image is captured by a radiography apparatus, acquire a low-energy image captured by the radiography apparatus by emitting radiation having first energy to the subject into which the contrast medium has been injected, and a high-energy image captured by the radiography apparatus by emitting radiation having second energy higher than the first energy to the subject into which the contrast medium has been injected, generate a difference image showing a difference between the low-energy image and the high-energy image, and identify whether or not to perform re-capturing of the high-energy image of the subject, based on an analysis result about a contrast amount, which is performed on the difference image, and the elapsed time.

An image processing apparatus includes at least one processor that is configured to: acquire a low-energy image captured by a radiography apparatus by emitting radiation having first energy to a subject into which a contrast medium has been injected, and a plurality of high-energy images captured by the radiography apparatus by emitting radiation having second energy higher than the first energy at a plurality of different imaging timings after the injection of the contrast medium, and generate a second difference image showing a difference between a plurality of first difference images showing a difference of the low-energy image and each of the plurality of high-energy images to remove a pixel value corresponding to the contrast medium that has permeated outside a region of interest.

A method for imaging an organ with a medical imaging system comprising a radiation source, a detector facing the radiation source, an organ support and a compression paddle, wherein the compression paddle is smaller than the detector, the method comprising offsetting the compression paddle to a position towards a side edge of the detector, moving the radiation source along a trajectory, wherein the trajectory is above the compression paddle and dependent upon the position of the compression paddle, and acquiring images of the organ at several positions along the trajectory.

An apparatus has an upright gantry. A tube arm assembly and a compression arm assembly are rotatably coupled to the gantry. The tube arm assembly independently rotates relative to the compression arm assembly. A controller disposed on the gantry is operably connected to at least one of the tube arm assembly and the compression arm assembly.

A bracket body releasably secures a compression element to the compression arm of a breast imaging system. A pair of parallel lateral arms extends from a rigid frame which extends from the bracket. A span connects the ends of the lateral arms opposite the bracket and a flexible membrane extends from the span towards the bracket body.