发明授权
- 专利标题： Radiation image information read-out method and system
- 专利标题（中）： 辐射图像信息读出方法和系统
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申请号： US09770187申请日： 2001-01-29
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公开(公告)号： US06417518B2公开(公告)日： 2002-07-09
- 发明人: Satoshi Arakawa , Hiroyuki Karasawa , Hiroaki Yasuda
- 申请人： Satoshi Arakawa , Hiroyuki Karasawa , Hiroaki Yasuda
- 优先权： JP9-195311 19970722; JP9-228158 19970825
- 主分类号： G03B4208
- IPC分类号： G03B4208
摘要：
An image signal representing radiation image information on an object stored on a stimulable phosphor sheet is read out by scanning the stimulable phosphor sheet with a stimulating light beam and photoelectrically detecting light emitted from the stimulable phosphor sheet upon stimulation thereof by a photodetector having a photoelectric surface. A variable transmittance medium whose transmittance to the light emitted from the stimulable phosphor sheet upon stimulation thereof is variable continuously or stepwise is inserted into the optical path of the light between the stimulable phosphor sheet and the photoelectric surface of the photodetector. The transmittance of the variable transmittance medium is changed according to the amount of light emitted from the stimulable phosphor sheet upon stimulation thereof so that the photoelectric surface is not saturated by an excessive amount of light impinging thereupon.
公开/授权文献
- US20010019114A1 Radiation image information read-out method and system 公开/授权日：2001-09-06
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