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公开(公告)号：US20180242927A1
公开(公告)日：2018-08-30
申请号：US15902508
申请日：2018-02-22
发明人： Hiroaki Nakai , Emi Tamura , Hiroaki Miyazaki , Mikihito Hayashi , Tooru Kato , Naoki Sugihara
CPC分类号： A61B6/032 , A61B6/0457 , A61B6/4035 , A61B6/4208 , A61B6/4233 , A61B6/5205 , G01T1/17 , G01T1/2018 , G01T1/2985
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube and an X-ray detector. The X-ray tube generates X-rays. The X-ray detector includes a first detection area detecting the X-rays and a second detection area detecting the X-rays. The first detection area includes a first scintillator having a first fluorescence decay time, the second detection area includes a second scintillator having a second fluorescence decay time shorter than the first fluorescence decay time. The second detection area is arranged at both ends of the first detection area with respect to a channel direction.
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公开(公告)号：US10667774B2
公开(公告)日：2020-06-02
申请号：US16041224
申请日：2018-07-20
发明人： Tooru Kato , Hiroaki Miyazaki , Emi Tamura , Hiroaki Nakai
摘要： An X-ray CT apparatus according to an embodiment includes a photon counting detector and processing circuitry. The photon counting detector includes a plurality of detection areas arranged in a channel direction and a column direction and is configured to output detection signals corresponding to the quantity of photons incident thereto, the detection areas each including a plurality of detecting elements. The processing circuitry is configured to calculate a heat generation amount for each of the detection areas on the basis of the detection signal corresponding to the incident photons detected in the detection area, to determine a control amount on the basis of the heat generation amount calculated for each of the detection areas, and to control temperature in each of the detection areas by using the determined control amount.
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公开(公告)号：US11076823B2
公开(公告)日：2021-08-03
申请号：US16021951
申请日：2018-06-28
发明人： Emi Tamura , Hiroaki Miyazaki , Hiroaki Nakai , Toshiyuki Ono
摘要： An X-ray CT apparatus according to one embodiment includes a photon counting detector and a processing circuitry. The photon counting detector includes a plurality of detecting elements configured to detect X-rays. The processing circuitry is configured to set a control parameter corresponding to a position of each detecting element of the plurality of detecting elements in the photon counting detector.
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公开(公告)号：US10959684B2
公开(公告)日：2021-03-30
申请号：US15902508
申请日：2018-02-22
发明人： Hiroaki Nakai , Emi Tamura , Hiroaki Miyazaki , Mikihito Hayashi , Tooru Kato , Naoki Sugihara
摘要： According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube and an X-ray detector. The X-ray tube generates X-rays. The X-ray detector includes a first detection area detecting the X-rays and a second detection area detecting the X-rays. The first detection area includes a first scintillator having a first fluorescence decay time, the second detection area includes a second scintillator having a second fluorescence decay time shorter than the first fluorescence decay time. The second detection area is arranged at both ends of the first detection area with respect to a channel direction.
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公开(公告)号：US10769822B2
公开(公告)日：2020-09-08
申请号：US15951693
申请日：2018-04-12
发明人： Emi Tamura , Hiroaki Nakai
摘要： An X-ray CT apparatus according to an embodiment includes a photon counting detector, and processing circuitry. The photon counting detector includes a plurality of detecting elements each of which outputs signals corresponding to numbers of photons that are counted. The processing circuitry generates pieces of first projection data on a basis of the signals from the plurality of detecting elements. The processing circuitry generate second projection data by bundling together, in spatial units, pieces of first projection data from a predetermined number of detecting elements among the plurality of detecting elements. The processing circuitry reconstructs a material decomposition image on a basis of the second projection data.
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公开(公告)号：US20190021687A1
公开(公告)日：2019-01-24
申请号：US16041224
申请日：2018-07-20
发明人： Tooru KATO , Hiroaki Miyazaki , Emi Tamura , Hiroaki Nakai
CPC分类号： A61B6/4488 , A61B6/032 , A61B6/035 , A61B6/06 , A61B6/4035 , A61B6/4233 , A61B6/4241 , A61B6/5205 , A61B6/54
摘要： An X-ray CT apparatus according to an embodiment includes a photon counting detector and processing circuitry. The photon counting detector includes a plurality of detection areas arranged in a channel direction and a column direction and is configured to output detection signals corresponding to the quantity of photons incident thereto, the detection areas each including a plurality of detecting elements. The processing circuitry is configured to calculate a heat generation amount for each of the detection areas on the basis of the detection signal corresponding to the incident photons detected in the detection area, to determine a control amount on the basis of the heat generation amount calculated for each of the detection areas, and to control temperature in each of the detection areas by using the determined control amount.
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