Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada, Spain.
Phys Med. 2013 Mar;29(2):163-70. doi: 10.1016/j.ejmp.2012.01.001. Epub 2012 Jan 25.
The beam quality correction factor [Formula: see text] and the perturbation factor pQ, commonly considered in dosimetry with ionization chambers, were calculated for the NE2571 and the Standard Imaging A19 and A12S chambers, using the Monte Carlo simulation code PENELOPE. For the NE2571 chamber, the values of [Formula: see text] obtained are in very good agreement with those found in previous works by Wulff et al. and Muir and Rogers with the code EGSnrc and also with the experimental results summarized in the NCS code of practice. For pQ, a difference of ∼0.4% has been found between our results and those obtained with EGSnrc for (60)Co and this difference increases slightly with TPR10(20) values. These factors have been calculated also for the A19 and A12S chambers of Standard Imaging. The values of [Formula: see text] show reasonable agreement with those recently calculated by Muir and Rogers and the measurements of McEwen.
束流品质修正因子[公式：见正文]和扰动因子 pQ，通常在电离室剂量学中考虑，使用蒙特卡罗模拟代码 PENELOPE 为 NE2571 和 Standard Imaging A19 和 A12S 腔室进行了计算。对于 NE2571 腔室，获得的[公式：见正文]值与 Wulff 等人之前在 EGSnrc 代码中以及在 NCS 实践代码中总结的实验结果非常吻合。对于 pQ，我们的结果与 EGSnrc 对 (60)Co 的结果之间存在约 0.4%的差异，并且随着 TPR10(20)值的增加，这种差异略有增加。这些因子也为 Standard Imaging 的 A19 和 A12S 腔室进行了计算。[公式：见正文]值与 Muir 和 Rogers 最近的计算值以及 McEwen 的测量值相符。
