Speller R D, White D R, Showalter C K, Rothenberg L N, Pentlow K S, Morgan T J, Shope T B
Br J Radiol. 1981 Dec;54(648):1053-61. doi: 10.1259/0007-1285-54-648-1053.
During the past three years, 23 computerized tomography (CT) machines from ten different manufacturers located in Europe and the USA have been evaluated. Using the same set of phantoms and measurement techniques, performance data have been derived including noise, uniformity of CT numbers, low contrast detectability, spatial resolution, modulation transfer function, effective photon energy and linearity of CT numbers. Thermoluminescent and film dosimetry were used to determine single-slice dose profiles at the periphery and centre of specialized anthropomorphic phantoms. The results of this study are presented in tabular and graphical form together with some general conclusions on their implications.
在过去三年中，对来自欧洲和美国十个不同制造商的23台计算机断层扫描（CT）机进行了评估。使用同一组体模和测量技术，得出了包括噪声、CT值均匀性、低对比度可探测性、空间分辨率、调制传递函数、有效光子能量以及CT值线性等性能数据。使用热释光和胶片剂量测定法来确定专用人体模型周边和中心的单层剂量分布。本研究结果以表格和图形形式呈现，并就其意义给出了一些一般性结论。
