Casson H, Kiley J P
Med Phys. 1987 Mar-Apr;14(2):216-7. doi: 10.1118/1.596073.
The AAPM Task Group dosimetry protocol is ambiguous regarding the replacement correction factors Prepl to be applied to electron measurements with parallel-plate chambers. By intercomparison with a cylindrical chamber whose Prepl values at dmax may be calculated from Task Group 21, the Prepl values for a PTW/Markus parallel-plate chamber have been determined in the range of mean incident energies of 5-11 MeV. The Prepl values for this chamber are found to differ significantly from unity, if one assumes that the cylindrical chamber values are valid.
美国医学物理师协会任务组的剂量测定协议对于应用于平行板电离室电子测量的替换校正因子Prepl含糊不清。通过与一个圆柱形电离室进行比对（其在最大剂量深度处的Prepl值可根据任务组21进行计算），已确定了PTW/马库斯平行板电离室在5 - 11 MeV平均入射能量范围内的Prepl值。如果假设圆柱形电离室的值是有效的，那么发现该电离室的Prepl值与1有显著差异。
