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1. 发明公开

EP4174529A1 RADIATION DETECTOR 审中-实审
公开(公告)号：EP4174529A1
公开(公告)日：2023-05-03
申请号：EP21828239.0
申请日：2021-06-03
申请人： National Institutes for Quantum Science and Technology
发明人： YAMAYA, Taiga , TAKAHASHI, Miwako
IPC分类号： G01T1/161 , G01T1/17 , G01T1/172 , G01T7/00 , A61B17/28
摘要： Provided is a radiation detector that can allow an operator to more accurately identify a position of a body tissue into which radionuclides have been taken. A radiation detector (1) includes: a probe (10) which has a radiation detection element (20) housed therein and which is insertable into a body; a reporting part (30) provided to the probe (10); and a control part (50) configured to cause the reporting part (30) to operate in accordance with a result of detection of radiation, the detection being made by the radiation detection element (20).

2. 发明公开

EP3998499A1 RADIATION POSITION DETECTOR 审中-实审
公开(公告)号：EP3998499A1
公开(公告)日：2022-05-18
申请号：EP20836254.1
申请日：2020-06-26
申请人： National Institutes for Quantum Science and Technology
发明人： YOSHIDA, Eiji , YAMAYA, Taiga
IPC分类号： G01T1/161 , G01T1/20
摘要： A radiation position detector includes: a photodetector array 12 constituted of unit-sized unit photodetectors (12A, 12C to 12K) arranged on a two-dimensional plane; a scintillator array 30 constituted of a plurality of scintillator elements (36) optically connected to the photodetector array 12, wherein scintillator units 38, 38A to 38H are each constituted of a pair of unit scintillators 36 whose individual incident surface's cross-sectional size is 1/4 of the size of the unit photodetector, where at least part of which is optically connected on an incident surface side and the rest is isolated with a reflective material 34, the scintillator units 38, 38A to 38H being each arranged so as to be positioned over two of the unit photodetectors in the scintillator array; and a position evaluation unit 40 configured to identify the scintillator unit by the presence or absence of a light-receiving signal at each of the photodetectors and furthermore identify one of the unit scintillators of the scintillator unit on the basis of a strength of the light-receiving signal, in a case in which the signal is present, to obtain a two-dimensional radiation detection position. The spatial resolution of digital detectors can thereby be improved without incurring large costs.

3. 发明公开

EP4318048A1 IMAGE PROCESSING DEVICE, IMAGE PROCESSING SYSTEM, AND IMAGE PROCESSING METHOD 审中-实审
公开(公告)号：EP4318048A1
公开(公告)日：2024-02-07
申请号：EP22775514.7
申请日：2022-03-22
申请人： National Institutes for Quantum Science and Technology , Atox Co., Ltd.
发明人： TASHIMA, Hideaki , AKAMATSU, Go , YAMAYA, Taiga
IPC分类号： G01T1/161
摘要： By a technique different from conventional techniques, quality of an image obtained by nuclear medicine imaging is improved. In an image processing device (1), a first reconstruction process section (11) generates, by a reconstruction process with respect to list mode data acquired by a PET device (90), an initial image indicating a concentration distribution of a radioactive substance. A scatter component derivation section (12) derives, from the initial image, scatter component projection data indicating a scatter component of radiation rays by scatter estimation simulation. A second reconstruction process section (13) generates, by a reconstruction process with respect to the scatter component projection data, a low resolution scatter image indicating the scatter component and having a resolution lower than that of the initial image. An upscaling process section (14) generates an upscaled scatter image having a resolution identical with that of the initial image by upscaling the low resolution scatter image. An image correction section (15) generates a scatter-correction image by subtracting the upscaled scatter image from the initial image.

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