Hitachi, Ltd.

Acrorad Co., Ltd.

Agency of Industrial Science and Technology

Kensuke Amemiya

Yuuichirou Ueno

Hiroshi Kitaguchi

Kazuma Yokoi

Shinichi Kojima

Norihito Yanagita

Kikuo Umegaki

Katsutoshi Tsuchiya

Takafumi Ishitsu

Takashi Okazaki

Takashi Matsumoto

Katsumi Tokiguchi

Kazuhiro Takeuchi

Norihito Yanagida

Takayoshi Seki

Noriyuki Sakudo

Tomoyuki Seino

Naoyuki Yamada

Keiji Kobashi

Yuichiro Ueno

Isao Hashimoto

Kazuo Mera

Keiji Arimatsu

Yasuo Yamashita

Kazuo Hiramoto

Hidemi Koike

Osamu Yokomizo

Isao Takahashi

Yoshimi Hakamata

Tsutomu Imai

Keitaro Hitomi

Shigemitsu Hara

Masanobu Tanaka

Junya Ito

Shinobu Irikura

Ryuji Jinnai

Akihito Kitajima

Tadayoshi Shoji

A radiological imaging apparatus of the present invention comprises an image pickup device and a medical examinee holding device that is provided with a bed. The image pickup device includes a large number of radiation detectors and radiation detector support plates. A large number of radiation detectors are mounted around the circumference of a through-hole and arranged in the axial direction of the through-hole. The radiation detectors are arranged in three layers formed radially with respect to the center of the through-hole and mounted on the lateral surfaces of the radiation detector support plates. Since the radiation detectors are not only arranged in the axial direction and circumferential direction of the through-hole but also arrayed in the radial direction, it is possible to obtain accurate information about a &#x3b3;-ray arrival position in the radial direction of the through-hole (the positional information about a radiation detector from which a &#x3b3;-ray image pickup signal is output). The use of accurate information about &#x3b3;-ray arrival increases the tomogram accuracy. As a result, the present invention enhances the, tomogram accuracy, that is, the PET examination accuracy.

Radiological imaging apparatus

A radiological imaging apparatus of the present invention comprises an image pickup device and a medical examinee holding device that is provided with a bed. The image pickup device includes a large number of radiation detectors and radiation detector support plates. A large number of radiation detectors are mounted around the circumference of a through-hole and arranged in the axial direction of the through-hole. The radiation detectors are arranged in three layers formed radially with respect to the center of the through-hole and mounted on the lateral surfaces of the radiation detector support plates. Since the radiation detectors are not only arranged in the axial direction and circumferential direction of the through-hole but also arrayed in the radial direction, it is possible to obtain accurate information about a &#x3b3;-ray arrival position in the radial direction of the through-hole (the positional information about a radiation detector from which a &#x3b3;-ray image pickup signal is output). The use of accurate information about &#x3b3;-ray arrival increases the tomogram accuracy. As a result, the present invention enhances the tomogram accuracy, that is, the PET examination accuracy.

A nuclear medical diagnosis apparatus capable of attaining improvement of the sensitivity by the reduction of a count loss of the data is provided. A data sort section inside a data acquisition unit re-arranges and outputs the data packet from a plurality of auxiliary data acquisition unit in order of the detection time data. A coincidence detection section includes a pair check section and a pair generation section. The pair check section refers to a context on the data packet re-arranged in order of the detection time, and judges a pair relating to a coincidence counting. The pair generation section, based on this judgment result, merges the data packet used as a pair, and outputs the same to the collection work station.

Nuclear medical diagnosis apparatus

A radiological imaging apparatus of the present invention includes an X-ray source for emitting an X-ray, a &#x3b3;-ray detecting section for outputting a detection signal of a &#x3b3;-ray, and an X-ray detecting section for outputting a detecting signal of an X-ray. The X-ray source moves around a bed for placing an examinee. The &#x3b3;-ray detecting section has a plurality of radiation detectors aligned in the longitudinal direction of the bed and placed around the bed. The X-ray detecting section is positioned in a region formed between one end and the other end of the &#x3b3;-ray detecting section in the longitudinal direction of the bed. The X-ray source is also positioned in the region. Since the X-ray detecting section is placed in the region, it is possible to accurately combine a PET image and an X-ray computed tomographic image.

Radiological imaging apparatus and radiological imaging method and radiological imaging support method

A positron emission tomography apparatus installs a plurality of detector units in the circumference of a bed. The detector unit installs a plurality of combined substrates including detectors, analogue ASICs, and a digital ASIC and a voltage adjustment device inside a housing. A partition plate installed inside the housing separates the region inside the housing into a first region installed with the combined substrates and a second region installed with the voltage adjustment device. The partition plate blocks noise generated in the voltage adjustment device so as not to affect &#x3b3;-ray detection signals outputted from the detectors, thereby preventing the effect of the noise generated in the voltage adjustment device toward &#x3b3;-ray detection signals and shortening the examination time.

Radiological imaging apparatus and positron emission tomographic apparatus

In a gamma camera, a plurality of radiation detector elements having a rod-shaped first electrode, a semiconductor device surrounds the first electrode to contact with it for entering a radiation, and a second electrode provided for the side surface of the semiconductor device are detachably attached to a holding member. The holding member has a first electrode contact portion contacted with the first electrode and a second electrode contact portion contacted with the second electrode. A collimator in which a plurality of radiation paths provided corresponding to the plurality of radiation detector elements are formed is arranged on the radiation entering side of the plurality of radiation detector elements. A &#x3b3;-ray detection signal outputted from the first electrode contact portion is sent to a signal processing integrated circuit. A high voltage is applied to the second electrode via the second electrode contact portion.

Radiation detector, radiation detector element, and radiation imaging apparatus

The radiological imaging system which can improve an energy resolution and perform a diagnosis with high accuracy includes a bed for carrying an examinee H, first and second imaging apparatuses and disposed along the longitudinal direction of the bed. The first imaging apparatus has a plurality of semiconductor radiation detectors for detecting &#x3b3;-rays emitted from the examinee H, arranged around the bed, the second imaging apparatus has an X-ray source for emitting X-rays to the examinee H and a radiation detector for detecting X-rays which have been emitted from the X-ray source and passed through the examinee H, and the bed is shared by the first imaging apparatus and the second imaging apparatus.

Radiological imaging system

A radiological imaging apparatus of the present invention comprises an image pickup device and a medical examinee holding device that is provided with a bed. The image pickup device includes a large number of radiation detectors and radiation detector support plates. A large number of radiation detectors are mounted around the circumference of a through-hole and arranged in the axial direction of the through-hole. The radiation detectors are arranged in three layers formed radically with respect to the center of the through-hole and mounted on the lateral surfaces of the radiation detector support plates. Since the radiation detectors are not only arranged in the axial direction and circumferential direction of the through-hole but also arrayed in the radial direction, it is possible to obtain accurate information about a &#x3b3;-ray arrival position in the radial direction of the through-hole (the positional information about a radiation detector from which a &#x3b3;-ray image pickup signal is output). The use of accurate information about &#x3b3;-ray arrival increases the tomogram accuracy. As a result, the present invention enhances the tomogram accuracy, that is, the PET examination accuracy.

The semiconductor radiological detectorminimizes a dead space resulting from the draw-out of a signal line from an electrode and which allows a number of semiconductor devices to be densely arranged to improve sensitivity and spatial resolution. The semiconductor radiological detectorcomprises a semiconductor device, an anodeattached to one surface of the semiconductor device, and a cathodeattached to the other surface of the semiconductor device. A signal lineis provided on the anode; the signal lineextends straight from the anodeand is connected to an X axis wire. Another signal lineis provided on the cathode; the signal lineextends straight from the cathodeand is connected to a Y axis wire

Semiconductor radiological detector and semiconductor radiological imaging apparatus

The energy calibration method detects irradiation of radiation with predetermined energy from a calibration radiation source using a plurality of radiation detectors having a peak value distribution whose mode and mean value are different and performs calibration so that mean values become identical within the peak value distributions of the respective radiation detectors obtained through irradiation of radiation with predetermined energy from the calibration radiation source.

Energy calibration method and radiation detecting and radiological imaging apparatus

Semiconductor detection modulesaccording to the present invention each comprises: one or more semiconductor detection elementsthat receive radiation to generate induced charges as signals; and a pair of electrodesthat are disposed to sandwich the one or more semiconductor elements, and obtains a data signal that is generated by the entrance of radiation into the semiconductor elements. In each of the semiconductor detection modules, a partial insulatorhaving an area smaller than that of the pair of electrodesis provided on at least one of the pair of electrodesat a place between the one electrodeand adjacent another electrodes, and between the one electrodeand adjacent another electrodes

Semiconductor detection module and radiation detection apparatus and radiological imaging apparatus using the semiconductor detection module

There are provided a radiation detection module, a printed circuit board, and a radiological imaging apparatus which make it possible to enhance spatial resolution without increasing channel number, and thereby to perform high-accuracy diagnosis. The radiation detection module includes a plurality of radiation detectors, and a wiring board on which the plurality of radiation detectors are mounted in a manner of being arranged in at least a radiation traveling direction. Here, on the wiring board, a pair of the radiation detectors which are adjacent to each other in the radiation traveling direction are electrically connected to each other, thereby configuring one detector structure (i.e., detection channel). Moreover, the radiation detectors are mounted onto the wiring board such that respective connection parts of electrodes, which are to be electrically connected to each other, are in a mutually-facing state.

Radiation detection module, printed circuit board, and radiological imaging apparatus

A radiological imaging apparatus comprising a semiconductor detector unit in which a plurality of semiconductor radiation detection elements are installed on a detector mounted substrate in a matrix to constitute a detector unit. A plurality of detector units are releasably mounted on a fixing substrate. This mounting is carried out mating a coupling screw with a threaded hole formed in the detector mounted substrate, the coupling screw being inserted through a through-hole formed in the fixing substrate. The detector mounted substrate is provided with a pair of positioning pins. The positioning pins are inserted into positioning holes, respectively, formed in the fixing substrate, to position the detector unit.

Radiation detection apparatus and radiological imaging apparatus

A nuclear medicine diagnostic apparatus is provided that can improve time resolution and energy resolution and diagnosing accuracy by enhancing radiation detectors in terms of moisture-proofing and dust-proofing effects while efficiently cooling the radiation detectors. The apparatus has a first region A in which radiation detectors are to be accommodated, and a second region B in which signal processors are to be accommodated. These regions are provided inside a housing membervia an adiabatic member. The housing memberalso has a ventilation portformed to communicate with the first region A and equipped with an anti-dust filter. Ventilation holesare formed to communicate with the first region B and serving as entrances for cooling air. Unit fansserve as exits for the cooling air.

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Hitachinaka, Japan

Kensuke Amemiya