IMAGING PERFORMANCE OF A DIGITAL STORAGE PHOSPHOR SYSTEM
IMAGING PERFORMANCE OF A DIGITAL STORAGE PHOSPHOR SYSTEM
复制标题
DOI：
10.1118/1.596127
复制
发表时间：
1987-09-01
期刊：
影响因子：
3.8
通讯作者：
ZAENGEL, T
中科院分区：
文献类型：
--
作者：
HILLEN, W;SCHIEBEL, U;ZAENGEL, T
研究了一种用于数字投影X射线摄影的存储荧光系统（SPS）的成像性能，该系统将X射线图像暂时存储在一个光激励荧光板中，然后由扫描激光束读出。对两种成像板的成像性能进行了分析。的空间分辨率描述的调制传递函数和记录的图像数据的信噪比（S/N）的测量方面的噪声等效量子和检测量子效率。讨论了它们对探测器入射剂量和空间频率的依赖关系。详细分析了图像噪声的不同来源，概述了系统的内在特征和局限性。最后，SPS的S/N行为进行了比较与已发表的数据的屏幕-电影系统。
The imaging performance of a storage phosphor system (SPS) for digital projection radiography is studied in which the x-ray image is temporarily stored in a light-stimulable phosphor plate which is subsequently read out by a scanning laser beam. The imaging performance of this system has been analyzed for two types of imaging plates. The spatial resolution is described by the modulation transfer function and the signal-to-noise (S/N) ratios of the recorded image data are measured in terms of noise-equivalent quanta and detective quantum efficiency. Their dependence on detector entrance dose and spatial frequency is discussed. A detailed analysis of the different sources of image noise is given to outline the intrinsic features and limits of the system. Finally, the S/N behavior of the SPS is compared with published data of screen-film systems.