Velkley D E, Manson D J, Purdy J A, Oliver G D
Med Phys. 1975 Jan-Feb;2(1):14-9. doi: 10.1118/1.594158.
Measurements of surface dose and build-up have been measured for photon radiation sources with maximum energy from 1.2 to 25 MeV. A variable volume ionization chamber was used and the results extrapolated to what would be obtained with a zero volume chamber. The results are found to depend systematically on the plate separation of a parallel plate ionization chamber and an empirical method was derived for correcting measurements made with a fixed volume chamber. The relationship of dose build-up curves with skin reactions in radiation therapy patients is discussed.
已对最大能量为1.2至25 MeV的光子辐射源的表面剂量和剂量建成进行了测量。使用了可变体积电离室，并将结果外推至零体积电离室所能获得的结果。发现结果系统地依赖于平行板电离室的极板间距，并推导了一种经验方法来校正使用固定体积电离室进行的测量。讨论了放射治疗患者中剂量建成曲线与皮肤反应的关系。
