发明授权
- 专利标题: Radiation detector with several conversion layers
- 专利标题(中): 具有多个转换层的辐射检测器
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申请号: US12675798申请日: 2008-09-05
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公开(公告)号: US08513613B2公开(公告)日: 2013-08-20
- 发明人: Christoph Herrmann , Christian Baeumer , Roger Steadman Booker , Guenter Zeitler
- 申请人: Christoph Herrmann , Christian Baeumer , Roger Steadman Booker , Guenter Zeitler
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips N.V.
- 当前专利权人: Koninklijke Philips N.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP07115967 20070907
- 国际申请: PCT/IB2008/053602 WO 20080905
- 国际公布: WO2009/031126 WO 20090312
- 主分类号: H01L27/146
- IPC分类号: H01L27/146 ; G01T1/20
摘要:
The invention relates to a radiation detector (100), particularly for X-rays (X) and for γ-rays, which comprises a combination of (a) at least one primary conversion layer (101a-101f) with a low attenuation coefficient for the photons and (b) at least one secondary conversion layer (102) with a high attenuation coefficient for the photons. In preferred embodiments, the primary conversion layer (101a-101f) may be realized by a silicon layer coupled to associated energy-resolving counting electronics (111a-111f, 121). The secondary conversion layer (102) may be realized for example by CZT or GOS coupled to energy-resolving counting electronics or integrating electronics. Using primary conversion layers with low stopping power allows to build a stacked radiation detector (100) for spectral CT in which the counting rates of the layers are limited to feasible values without requiring unrealistic thin layers.
公开/授权文献
- US20100213381A1 RADIATION DETECTOR WITH SEVERAL CONVERSION LAYERS 公开/授权日:2010-08-26