Variable compensation chest radiography performed with a computed radiography system: design considerations and initial clinical experience.
Variable compensation chest radiography performed with a computed radiography system: design considerations and initial clinical experience.
复制标题
使用计算机放射线摄影系统进行可变补偿胸部放射线摄影：设计考虑因素和初步临床经验。
DOI：
10.1148/radiology.187.1.8451437
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发表时间：
1993
期刊：
影响因子：
19.7
通讯作者：
Ravin,CE
中科院分区：
文献类型：
--
作者：
Dobbins3rd,JT;Rice,JJ;Goodman,PC;PatzJr,EF;Ravin,CE
The authors describe a variable compensation (VC) technique in which an x-ray equalizer and a computed radiography system are used. The VC technique allows retrospective alteration of equalized chest appearance with maintenance of improved signal-to-noise ratio in dense regions. Two imaging plates are used: one upstream of the patient to record the incident beam profile and one down-stream to record the equalized image. Subtraction of a weighted version of the upstream image from the down-stream image permits alteration of the appearance of the VC image, from the extremes of stimulated-unequalized to highly equalized. VC image appearance was optimized with a real-time workstation. The quality of VC images obtained in 33 patients was evaluated by three chest radiologists. Mediastinal appearance was better on VC equalized images than on conventional screen-film images. The stimulation of the appearance of a conventional radiograph with VC proved useful in interpretation of lung appearances on equalized radiographs.
