Abstract: An image processing apparatus includes: an acquisition unit that acquires a radiographic image of a breast and information indicating a thickness of the breast in capture of the radiographic image; and a derivation unit that derives a percentage of mammary glands of a breast image in the radiographic image acquired by the acquisition unit using different methods in a case in which the thickness of the breast is equal to or greater than a predetermined thickness and a case in which the thickness of the breast is less than the predetermined thickness.

Abstract: In a console, a control unit functions as an acquisition unit that acquires a radiographic image of a breast, a derivation unit that derives a mammary gland content rate for each pixel of a breast region in the radiographic image, and a detection unit that detects a mammary gland concentrated region in which mammary glands are concentrated on the basis of a result of specifying whether a specific pixel which is each pixel of the breast region is a pixel included in the mammary gland concentrated region of the breast region on the basis of the mammary gland content rate of the specific pixel and a mammary gland content rate of a pixel in a local region around the specific pixel.

Abstract: An image acquisition unit acquires a plurality of projection images corresponding to a plurality of radiation source positions at the time of tomosynthesis imaging, the plurality of projection images being generated by causing an imaging apparatus to perform tomosynthesis imaging in which radiation is emitted to a subject. A structure position specifying unit specifies one structure position in the subject. A display controller specifies projection positions of the structure position in the plurality of projection images, and performs switching display of the plurality of projection images on a display unit so that the projection positions match a predetermined position on the display unit.

Abstract: An image interpretation support apparatus includes: an acquisition unit that acquires a plurality of projection images obtained by tomosynthesis imaging in which a radiation is irradiated to a breast from different irradiation angles by a radiation source and a projection image is captured at each irradiation angle by a radiation detector; a first generation unit that generates a plurality of tomographic images on each of a plurality of tomographic planes of the breast from the plurality of projection images; a second generation unit that generates a synthetic two-dimensional image from a plurality of images among the plurality of projection images and the plurality of tomographic images; a detection unit that detects an object of interest candidate region estimated to include an object of interest from the synthetic two-dimensional image; and a determination unit that determines whether or not the object of interest is included in the object of interest candidate region on the basis of the plurality of tomog

Abstract: An information acquisition unit acquires at least one information item of subject information, imaging condition information, or positioning information. Next, a body movement feature derivation unit derives body movement feature information indicating a feature of body movement of a breast which occurs at the time of the tomosynthesis imaging. A storage stores correspondence information in which the derived body movement feature information corresponds to at least one information item of the subject information, the imaging condition information, or the positioning information.

Abstract: An image display apparatus includes a depth map creating unit that creates, on the basis of a two-dimensional radiation image and a plurality of tomographic images for the same subject, a plurality of depth maps in which each position on the two-dimensional radiation image and depth information indicating a depth directional position of a tomographic plane corresponding to each position are associated with each other while changing a correspondence relationship between each position on the two-dimensional radiation image and the depth information.

Abstract: An image acquisition unit acquires a plurality of projection images corresponding to a plurality of radiation source positions at the time of tomosynthesis imaging, the plurality of projection images being generated by causing an imaging apparatus to perform tomosynthesis imaging. A positional shift amount derivation unit derives a positional shift amount between the plurality of projection images based on body movement of the subject with a reference projection image generated at a radiation source position where an optical axis of the radiation emitted from the radiation source is perpendicular to a detection surface of the detection unit, among the plurality of projection images, as a reference. A reconstruction unit generates a tomographic image of at least one tomographic plane of the subject by reconstructing the plurality of projection images while correcting the positional shift amount.

Abstract: An image acquisition unit acquires a plurality of projection images corresponding to a plurality of radiation source positions at the time of tomosynthesis imaging, the plurality of projection images being generated by causing an imaging apparatus to perform tomosynthesis imaging in which radiation is emitted to a subject. A structure position specifying unit specifies one structure position in the subject. A display controller specifies projection positions of the structure position in the plurality of projection images, and performs switching display of the plurality of projection images on a display unit so that the projection positions match a predetermined position on the display unit.

Abstract: An image processing apparatus includes: an acquisition unit that acquires a plurality of radiographic images of the same breast which have captured in a plurality of different states related to compression of the breast; and a derivation unit that derives, on the basis of an amount of incident radiation derived from a value of a fat tissue pixel in a radiographic image in which the fat tissue pixel obtained by a portion of the breast which is estimated to be composed of only fat tissues is included in a breast image among the plurality of radiographic images acquired by the acquisition unit, a percentage of mammary glands of a breast image in a radiographic image different from the radiographic image used to derive the amount of incident radiation.

Abstract: An image processing apparatus includes: an acquisition unit that acquires a radiographic image of a breast; and a derivation unit that derives a percentage of mammary glands of a breast image in the radiographic image acquired by the acquisition unit on the basis of an amount of incident radiation on a direct region which is a region directly irradiated with radiation without passing through the breast and an amount of incident radiation on a mammary gland tissue pixel obtained by a portion of the breast which is estimated to be composed of only mammary gland tissues in the radiographic image

Abstract: An image acquisition unit acquires a plurality of projection images, which are generated by causing an imaging apparatus to perform tomosynthesis imaging for irradiating a subject with radiation under a first imaging condition for tomosynthesis imaging and which respectively correspond to a plurality of radiation source positions at the time of tomosynthesis imaging. A body movement determination unit determines whether or not the body movement of the subject is occurring during tomosynthesis imaging on the basis of the plurality of projection images. A condition setting unit sets a second imaging condition for simple imaging in the imaging apparatus in a case where the body movement is occurring.

Abstract: An image processing apparatus includes: an acquisition unit that acquires a radiographic image of a breast and information indicating a thickness of the breast in capture of the radiographic image; and a derivation unit that derives a percentage of mammary glands of a breast image in the radiographic image acquired by the acquisition unit using different methods in a case in which the thickness of the breast is equal to or greater than a predetermined thickness and a case in which the thickness of the breast is less than the predetermined thickness.

Abstract: In a console, a control unit functions as an acquisition unit that acquires a radiographic image of a breast, a derivation unit that derives a mammary gland content rate for each pixel of a breast region in the radiographic image, and a detection unit that detects a mammary gland concentrated region in which mammary glands are concentrated on the basis of a result of specifying whether a specific pixel which is each pixel of the breast region is a pixel included in the mammary gland concentrated region of the breast region on the basis of the mammary gland content rate of the specific pixel and a mammary gland content rate of a pixel in a local region around the specific pixel.

Abstract: A first image obtaining unit obtains a plurality of projection images corresponding to different radiation source positions, the projection images being imaged under a first imaging condition for tomosynthesis imaging, and a second image obtaining unit obtains a two-dimensional image imaged with a given radiation source position under a second imaging condition for simple imaging. An image quality correction unit performs image quality correction on the projection images to compensate for a difference of image quality between the projection images and the two-dimensional image based on a difference between the first imaging condition and the second imaging condition. A reconstruction unit reconstructs the projection images having been subjected to the image quality correction and the two-dimensional image to generate a tomographic image of a slice plane of the subject.

Abstract: When at least one of a two-dimensional radiological image and a plurality of tomographic images of the same subject is displayed on a monitor, a depth map creation unit creates a depth map in which each position on the pseudo two-dimensional image is associated with depth information indicating the position of a tomographic plane corresponding to each position in a depth direction. A display control unit specifies the depth information of a predetermined position in the two-dimensional radiological image, with reference to the depth map, and displays the tomographic image of the tomographic plane indicated by the specified depth information on the monitor.

Abstract: A stimulus presenting system according to the present disclosure includes a biological information acquirer that acquires biological information on a user; a mental state estimator that estimates a mental state of the user on the basis of the biological information; a target state setter that sets a target mental state after the mental state estimator estimates that the mental state is a first mental state; a scenario creator that creates a scenario including at least one stimulus presenting content possibly influencing the mental state on the basis of the set target mental state; a content presenter that presents the stimulus presenting content on the basis of the created scenario; and a mental state determiner that determines whether a second mental state estimated by the mental state estimator on the basis of biological information acquired after the presentation of the stimulus presenting content is started attains the set target mental state.

Abstract: An image acquisition unit acquires a breast image, and a first estimation unit calculates a first estimated value of a direct arrival dose in a direct X-ray region, which is included in the breast image and to which X-rays are directly emitted, based on the imaging conditions at the time of X-ray imaging. A second estimation unit calculates a second estimated value of the direct arrival dose based on the pixel value of the direct X-ray region included in the breast image. A determination unit determines a direct arrival dose, which is used for calculation of the mammary gland content rate, based on the first estimated value and the second estimated value. A calculation unit calculates a mammary gland content rate using the direct arrival dose determined by the determination unit.

Abstract: A first imaging unit obtains a first radiation image, which is imaged under first imaging conditions. A second imaging unit obtains a plurality of projection images by tomosynthesis imaging under second imaging conditions. A reconstructing unit reconstructs a plurality of projection images to generate a plurality of tomographic images of cross sectional planes of a subject. An image synthesizing unit generates a second radiation image employing the plurality of tomographic images. A subtraction processing unit administers a subtraction process on the first and second radiation images, to generate a subtraction image.

Abstract: Disclosed are a radiographic imaging device and a radiographic imaging method which appropriately set an irradiation condition of radiation according to the presence or absence of an implant in a breast. An implant information acquisition unit 80 acquires implant information representing whether or not an implant is included in a breast M as a subject. An irradiation condition setting unit 82 sets, based on the implant information, a first irradiation condition C1 for irradiating the breast M with radiation when an implant is present and a second irradiation condition C2 for irradiating the breast M with radiation when an implant is absent. A radiation source drive control unit 70 drives an X-ray source 50 under the irradiation condition set by the irradiation condition setting unit 82 to irradiate the breast M with radiation.

Abstract: First and second image obtaining units respectively obtain a plurality of first projection images and a plurality of second projection images by tomosynthesis imaging operations according to first and second imaging conditions. A reconstructing unit reconstructs the plurality of first and second projection images employing processes of a reconstruction process that includes a filtering process other than the filtering process, to generate a plurality of first tomographic images and a plurality of second tomographic images for each of a plurality of cross sectional planes within a subject. A subtraction processing unit generates tomographic subtraction images from the first and second tomographic images. A filtering processing unit administers filtering processes on the tomographic subtraction images, to generate processed tomographic subtraction images.