de Rooij T P, Oestmann J W, Schultze Kool L J, Vrooman H A, Prokop M, Schaefer C M
Department of Diagnostic Radiology, University Hospital Leiden, The Netherlands.
Radiographics. 1994 Mar;14(2):407-14. doi: 10.1148/radiographics.14.2.8190963.
The combination of computed radiography (CR) and advanced multiple beam equalization radiography (AMBER) was evaluated for both single- and dual-energy chest radiography. The improved signal-to-noise ratio found with CR and AMBER resulted in a better visualization of structures in the mediastinum and basal lung than that found with CR alone. For the central lung, no improvement was seen. Because of the compressed dynamic range with CR and AMBER, contrast on hard copies and video monitors could be high without a sacrifice in image latitude. Dual-energy images showed a considerably lower noise level. The combined use of AMBER and CR promises to overcome the dynamic range limitations of digital displays while improving signal-to-noise ratio.
对计算机X线摄影（CR）与先进的多束均衡X线摄影（AMBER）相结合用于单能和双能胸部X线摄影进行了评估。与单独使用CR相比，CR与AMBER相结合所获得的改进的信噪比使纵隔和肺底部结构的显示更佳。对于肺中部，未观察到改善。由于CR和AMBER压缩了动态范围，硬拷贝和视频监视器上的对比度可以很高，而不会牺牲图像宽容度。双能图像显示噪声水平明显更低。AMBER与CR联合使用有望在提高信噪比的同时克服数字显示器的动态范围限制。
