Toshiba Medical Systems Corporation

Kabushiki Kaisha Toshiba

Tomoe Sagoh

Atsushi Hashimoto

Michito Nakayama

Shuya Nambu

Keiji Matsuda

Takashi Kanemaru

Takeshi Miyagi

Takayuki Yamazaki

Takaya Umehara

Koichi Miyama

Akira Nishijima

Machiko Iso

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.

X-ray computed tomography apparatus and X-ray detector

A photon-counting X-ray computed tomography (CT) apparatus of an embodiment includes photon-counting CT detection circuitry, integral CT detection circuitry, switching circuitry, and a feedback capacitance. Photon-counting CT detection circuitry outputs count values for respective energy bins, based on voltage pulses output from a feedback capacitance with electric charges output from an X-ray detection element configured to detect incident X-rays. Integral CT detection circuitry outputs an integral value, based on the voltage pulses output from the feedback capacitance with the electric charges output from the X-ray detection element. Switching circuitry switches between a case of transmitting the electric charges output from the X-ray detection element to the photon-counting CT detection circuitry and a case of transmitting the electric charges output from the X-ray detection element to the integral CT detection circuitry. The feedback capacitance is connected with the photon-counting CT detection circuitry and the integral CT detection circuitry in parallel.

Photon-counting X-ray CT apparatus and photon-counting X-ray diagnostic apparatus

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.

According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a detector, a first DAS, and a second DAS. The radiation detector includes a plurality of detection elements. Each detection element repeatedly detects X-rays generated by the X-ray tube and transmitted through a subject and repeatedly generates an electrical signal corresponding to the energy of the repeatedly detected X-rays. The first DAS acquires the electrical signal detected by part of the imaging region of each detection element in the integral mode. The second DAS acquires the electrical signal detected by the other part of the imaging region of each detection element in the photon count type mode.

X-ray computed tomography apparatus and radiation detector

An X-ray CT apparatus includes an X-ray source configured to generate an X-ray; a scintillator configured to convert the X-ray into a fluorescent; a substrate including a plurality of photosensitive elements configured to convert the fluorescent into an electric charge; a temperature sensor formed on the surface of the substrate; a heat element formed on the surface of the substrate; and a controller configured to control a temperature of the photodiode by adjusting an electric current of the heat element.

X-ray computed tomography apparatus

An X-ray CT apparatus has an X-ray source, an X-ray detector, a temperature sensor, a data acquisition unit and a controller. The X-ray source generates an X-ray. The X-ray detector detects the X-ray. The temperature sensor detects a temperature of the X-ray detector. The data acquisition unit acquires data from the X-ray detector. The controller controls a temperature of the X-ray detector through adjustment of a workload of the data acquisition unit during a non-scanning time.

Growing community of inventors

Utsunomiya, Japan

Tomoe Sagoh