Gould R G, Belanger B, Goldberg H I, Moss A
Radiology. 1980 Dec;137(3):783-8. doi: 10.1148/radiology.137.3.7444062.
The relationship between perceived image quality and measurable performance parameters of an intensified fluoroscopic image, viewed via a TV monitor or recorded on 105mm film, was investigated. Four specially manufactured image tubes, differing significantly in x-ray absorption efficiency, spatial resolution, and/or contrast resolution, were studied. Quantitative measurements of tube performance included the conversion factor, the quantum detection efficiency, the limiting resolution, the contrast ratio, and the contrast-detail characteristics. An assessment of the quality of clinical images was made by two radiologist-observers, working independently and without knowledge of any quantitative results. The observers were asked to rate the noise, lag, resolution, and contrast of the images during a variety of fluoroscopic procedures on each tube. While general agreement was found between the quantitative measurements and the radiologists' perceptions of image quality, the noise and contrast performance of an intensifier had greater influence on the radiologists' judgment of image quality than did resolution.
研究了通过电视监视器观看或记录在105毫米胶片上的增强荧光透视图像的感知图像质量与可测量性能参数之间的关系。研究了四个特制的影像增强管，它们在X射线吸收效率、空间分辨率和/或对比分辨率方面有显著差异。对影像增强管性能的定量测量包括转换系数、量子探测效率、极限分辨率、对比度和对比细节特性。由两名放射科观察员对临床图像质量进行评估，他们独立工作且不知道任何定量结果。要求观察员在对每个影像增强管进行各种荧光透视检查时，对图像的噪声、残影、分辨率和对比度进行评分。虽然定量测量结果与放射科医生对图像质量的感知之间存在总体一致性，但影像增强管的噪声和对比性能对放射科医生的图像质量判断的影响比分辨率更大。
