Abstract: A correction X-ray detector according to an embodiment includes a plurality of detector elements configured to detect an X-ray, and processing circuitry. The processing circuitry is configured to acquire a plurality of output values respectively corresponding to the plurality of the plurality of detector elements. The processing circuitry is further configured to determine the detector elements to be used in generating correction data based on the plurality of output values.

Abstract: A correction X-ray detector according to an embodiment includes a plurality of detector elements configured to detect an X-ray, and processing circuitry. The processing circuitry is configured to acquire a plurality of output values respectively corresponding to the plurality of the plurality of detector elements. The processing circuitry is further configured to determine the detector elements to be used in generating correction data based on the plurality of output values.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, X-ray detector, data acquisition circuit, and correction circuit. The X-ray tube generates X-rays. The X-ray detector detects the X-rays. The data acquisition circuit acquires data corresponding to an output from the X-ray detector. The correction circuit executes correction processing for third data acquired by the data acquisition circuit in actual scanning, based on first data acquired by the data acquisition circuit in a state of non-irradiation with X-rays before the actual scanning and second data acquired by the data acquisition circuit in the state of non-irradiation with X-rays after the actual scanning.

Abstract: According to one embodiment, the X-ray computed tomography apparatus includes an X-ray tube, a rotating frame, a plurality of detector elements, a plurality of DAS elements, switching circuitry, and switching control circuitry. The X-ray tube generates X-rays. The X-ray tube is attached to the rotating frame. The plurality of detector elements detect X-rays. The plurality of DAS elements perform signal processing on output signals from the plurality of detector elements. The switching circuitry is provided between the plurality of detector elements and the plurality of DAS elements. The switching control circuitry controls the switching circuitry to switch the connections between the plurality of detector elements and the plurality of DAS elements for every rotation of the rotating frame at a predetermined angle.

Abstract: An X-ray computer-tomography (CT) apparatus includes an X-ray detector, a reading unit, and a read control unit. The X-ray detector has a first region and a second region at least a part of which is aligned with the first region along a channel direction, the first region in which a plurality of first detection devices that detect X-rays are arranged, the second region in which a plurality of second detection devices having a width smaller in a slice direction than that of the first detection device are arranged. The reading unit reads a signal of the X-rays detected. The read control unit adjusts timing of reading signals from the first detection device and the second detection device according to difference between the size of the first and the second detection device in such a manner that time difference in the reading signals in the slice direction decreases.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, X-ray detector, data acquisition circuit, and correction circuit. The X-ray tube generates X-rays. The X-ray detector detects the X-rays. The data acquisition circuit acquires data corresponding to an output from the X-ray detector. The correction circuit executes correction processing for third data acquired by the data acquisition circuit in actual scanning, based on first data acquired by the data acquisition circuit in a state of non-irradiation with X-rays before the actual scanning and second data acquired by the data acquisition circuit in the state of non-irradiation with X-rays after the actual scanning.

Abstract: An X-ray computed tomography apparatus according to an embodiment includes an X-ray detector that includes a first semiconductor chip including a plurality of elements configured to convert X-rays into an electrical signal, a substrate configured to collect the electrical signal from each element, a second semiconductor chip that is provided between the first semiconductor chip and the substrate and is formed of the same material as that of the first semiconductor chip, a plurality of first electrodes configured to couple each element of the first semiconductor chip to the second semiconductor chip, and a plurality of second electrodes that are configured to couple the second semiconductor chip to the substrate and are larger than the first electrodes. The second semiconductor chip wires the first electrodes and the second electrodes on a one-to-one basis.

Abstract: According to one embodiment, the X-ray computed tomography apparatus includes an X-ray tube, a rotating frame, a plurality of detector elements, a plurality of DAS elements, switching circuitry, and switching control circuitry. The X-ray tube generates X-rays. The X-ray tube is attached to the rotating frame. The plurality of detector elements detect X-rays. The plurality of DAS elements perform signal processing on output signals from the plurality of detector elements. The switching circuitry is provided between the plurality of detector elements and the plurality of DAS elements. The switching control circuitry controls the switching circuitry to switch the connections between the plurality of detector elements and the plurality of DAS elements for every rotation of the rotating frame at a predetermined angle.

Abstract: An X-ray computed tomography apparatus according to an embodiment includes an X-ray detector that includes a first semiconductor chip including a plurality of elements configured to convert X-rays into an electrical signal, a substrate configured to collect the electrical signal from each element, a second semiconductor chip that is provided between the first semiconductor chip and the substrate and is formed of the same material as that of the first semiconductor chip, a plurality of first electrodes configured to couple each element of the first semiconductor chip to the second semiconductor chip, and a plurality of second electrodes that are configured to couple the second semiconductor chip to the substrate and are larger than the first electrodes. The second semiconductor chip wires the first electrodes and the second electrodes on a one-to-one basis.

Abstract: An X-ray computer-tomography (CT) apparatus includes an X-ray detector, a reading unit, and a read control unit. The X-ray detector has a first region and a second region at least a part of which is aligned with the first region along a channel direction, the first region in which a plurality of first detection devices that detect X-rays are arranged, the second region in which a plurality of second detection devices having a width smaller in a slice direction than that of the first detection device are arranged. The reading unit reads a signal of the X-rays detected. The read control unit adjusts timing of reading signals from the first detection device and the second detection device according to difference between the size of the first and the second detection device in such a manner that time difference in the reading signals in the slice direction decreases.