Flat-panel imaging system for fluoroscopy applications
Flat-panel imaging system for fluoroscopy applications
复制标题
用于荧光检查应用的平板成像系统
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J. Yu
中科院分区：
文献类型：
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作者：
R. Colbeth;M. J. Allen;D. Day;D. Gilblom;R. Harris;I. Job;M. Klausmeier;J. Pavkovich;E. Seppi;E. Shapiro;M. D. Wright;J. Yu
This paper describes a multi-mode, digital imager for real- time x-ray applications. The imager has three modes of operation: low dose fluoroscopy, zoom fluoroscopy, and high resolution radiography. These modes trade-off resolution or field-of-view for frame rate and additionally optimize the sensitivity of the imager to match the x-ray dose used in each mode. This large area sensing technology has a form factor similar to that of a film cassette, no geometric image distortion, no sensitivity to magnetic fields, a very large dynamic range which eliminates repeat shots due to over or under exposure, 12 bit digital output and the ability to switch between operating modes in real-time. The imager, which consists of three modules: the Receptor, the Power Supply and the Command Processor, is intended as a component in a larger imaging system. Preliminary characterization of the prototype imager in fluoroscopic mode at entrance exposure rates down to 2.5 (mu) R/frame, indicates that the DQE(f), MTF and low contrast resolution are comparable to that obtained with an image intensifier tube (IIT) coupled to a video camera.
