发明名称 |
Positron computed tomography scanner. |
摘要 |
<p>A positron CT scanner comprises a plurality of detectors (110) arranged in multi-layered rings and slice diaphragms (130) for restricting the visual fields of the detectors, so that the visual fields intersect a set axis during a scan. The spacing between diaphragms substantially corresponds to a certain number of detector cells, each of which can determine the positions of incident rays in the direction of the set axis during a scan. The slice diaphragms (130) are movable relative to the detector cells (110) in the direction of the set axis during a scan. <IMAGE></p> |
申请公布号 |
EP0521708(A1) |
申请公布日期 |
1993.01.07 |
申请号 |
EP19920306077 |
申请日期 |
1992.07.01 |
申请人 |
HAMAMATSU PHOTONICS K.K. |
发明人 |
TANAKA, EIICHI;SATOH, NAKAHIRO;SHIMIZU, KEIJI |
分类号 |
G01T1/161;A61B6/03;A61B6/06;G01T1/29 |
主分类号 |
G01T1/161 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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