Abstract: An image processing apparatus comprises processing circuitry. The processing circuitry is configured to acquire a first image in which each pixel is expressed with a first gradation. And the processing circuitry is configured to specify a partial region in the first image. And the processing circuitry is configured to convert, based on correspondence information that associates each level of the first gradation with a display pattern of a plurality of pixels in a display, the level in the first gradation of each pixel included in the partial region in the first image into the corresponding display pattern, the display displaying the display pattern with a second gradation having fewer levels than the first gradation. And the processing circuitry is configured to generate a second image that expresses a plurality of pixels included in the partial region of the first image as the converted display patterns.

Abstract: According to one embodiment, a medical image diagnostic apparatus includes a holding device, a driving unit, a first encoder, a second encoder, and processing circuitry. The holding device holds an X-ray generator and an X-ray detector such that the X-ray generator and the X-ray detector are rotatable. The driving unit transmits a rotating force of a driving motor to a rotation axis through a power transmission mechanism. The first encoder detects a rotation of the driving motor. The second encoder detects a rotation of the rotation axis. The processing circuitry detects an abnormal state of the power transmission mechanism, based on a time difference between a first pulse output from the first encoder and a corresponding second pulse output from the second encoder.

Abstract: According to one embodiment, the X-ray image diagnosis apparatus comprises an X-ray generator, an X-ray restriction unit, a first X-ray detector, a second X-ray detector, and a drive. The X-ray generator generates X-rays to be applied to a subject. The X-ray restriction unit is disposed between the subject and the X-ray generator to restrict X-rays outside an opening region which is formed using a metal plate. The first X-ray detector has a first detection region in which X-rays that pass through the subject are detected. The second X-ray detector has a second detection region which is smaller than the first detection region and which has a high spatial resolution. The drive moves the first and second X-ray detectors so that the second detection region includes an irradiation region of the subject formed by the opening region.

Abstract: According to embodiments, in a medical diagnostic imaging apparatus, an imaging unit captures a subject in a second X-ray irradiation area narrower than a first X-ray irradiation area. An X-ray image generating unit generates a first X-ray image in the first X-ray irradiation area and a second X-ray image in the second X-ray irradiation area based on an imaging result by the imaging unit. The adjusting unit calculates a statistic of a pixel value of the first X-ray image and adjusts an operating condition of the imaging unit so that the statistic approaches a threshold. A control unit causes the imaging unit and the X-ray image generating unit to generate the X-ray image based on the adjusted operating condition. Subsequently, the control unit performs control for causing the imaging unit and the X-ray image generating unit to generate the second X-ray image based on the operating condition.

Abstract: According to one embodiment, a medical image diagnostic apparatus includes a holding device, a driving unit, a first encoder, a second encoder, and processing circuitry. The holding device holds an X-ray generator and an X-ray detector such that the X-ray generator and the X-ray detector are rotatable. The driving unit transmits a rotating force of a driving motor to a rotation axis through a power transmission mechanism. The first encoder detects a rotation of the driving motor. The second encoder detects a rotation of the rotation axis. The processing circuitry detects an abnormal state of the power transmission mechanism, based on a time difference between a first pulse output from the first encoder and a corresponding second pulse output from the second encoder.

Abstract: An image processing apparatus comprises processing circuitry. The processing circuitry is configured to acquire a first image in which each pixel is expressed with a first gradation. And the processing circuitry is configured to specify a partial region in the first image. And the processing circuitry is configured to convert, based on correspondence information that associates each level of the first gradation with a display pattern of a plurality of pixels in a display, the level in the first gradation of each pixel included in the partial region in the first image into the corresponding display pattern, the display displaying the display pattern with a second gradation having fewer levels than the first gradation. And the processing circuitry is configured to generate a second image that expresses a plurality of pixels included in the partial region of the first image as the converted display patterns.

Abstract: According to one embodiment, the X-ray image diagnosis apparatus comprises an X-ray generator, an X-ray restriction unit, a first X-ray detector, a second X-ray detector, and a drive. The X-ray generator generates X-rays to be applied to a subject. The X-ray restriction unit is disposed between the subject and the X-ray generator to restrict X-rays outside an opening region which is formed using a metal plate. The first X-ray detector has a first detection region in which X-rays that pass through the subject are detected. The second X-ray detector has a second detection region which is smaller than the first detection region and which has a high spatial resolution. The drive moves the first and second X-ray detectors so that the second detection region includes an irradiation region of the subject formed by the opening region.

Abstract: According to embodiments, in a medical diagnostic imaging apparatus, an imaging unit captures a subject in a second X-ray irradiation area narrower than a first X-ray irradiation area. An X-ray image generating unit generates a first X-ray image in the first X-ray irradiation area and a second X-ray image in the second X-ray irradiation area based on an imaging result by the imaging unit. The adjusting unit calculates a statistic of a pixel value of the first X-ray image and adjusts an operating condition of the imaging unit so that the statistic approaches a threshold. A control unit causes the imaging unit and the X-ray image generating unit to generate the X-ray image based on the adjusted operating condition. Subsequently, the control unit performs control for causing the imaging unit and the X-ray image generating unit to generate the second X-ray image based on the operating condition.