Jacobson A F, Cameron J R, Siedband M P, Wagner J
Med Phys. 1976 Jan-Feb;3(1). doi: 10.1118/1.594224.
A test cassette employing a modification of the Ardran-Crooks attenuation technique for measuring peak tube potential (and half-value layer) is described. The technique employs a radiographic intensifying screen which is exposed to a hardened x-ray beam. Copper penetrameters are used to determine the attenuator thickness which reduces the light output from the screen to that transmitted by an optical attenuator over an adjacent area of the screen. The test cassette was calibrated by using x-ray machines whose high voltages were measured electrically. The test cassette has a measurement precision of +/- 1 kVp and an accuracy of +/- 3 kVp or better in the range 50-130 kVp for x-ray generators with the same voltage waveform.
本文描述了一种测试盒，该测试盒采用了Ardran-Crooks衰减技术的改进方法来测量峰值管电压（以及半价层）。该技术使用一个射线照相增感屏，使其暴露于经过硬化处理的X射线束下。使用铜质透度计来确定衰减器的厚度，该厚度可将增感屏的光输出量降低至与光学衰减器在增感屏相邻区域所透射的光输出量相同的水平。通过使用高压经电测量的X射线机对测试盒进行校准。对于具有相同电压波形的X射线发生器，该测试盒在50 - 130 kVp范围内的测量精度为±1 kVp，准确度为±3 kVp或更高。
