Radiation Medicine Engineering Department, Shahid Beheshti University, Tehran, Iran.
Phys Med. 2012 Apr;28(2):153-60. doi: 10.1016/j.ejmp.2011.04.004. Epub 2011 May 31.
Cobalt 60 source is generally available on high dose rate (HDR) afterloading equipment especially for treatment of gynecological lesions. The GZP6 remote afterloader (Nuclear Power Institute of China) utilizes (60)Co sources for treatment of intracavitary and intraluminal malignancies. In this study, the AAPM TG-43 dosimetric parameters of three sources in GZP6 system have been studied using MCNP4C Monte Carlo (MC) code; and the results are compared with other available (60)Co HDR sources. The presented parameters consist of air kerma strength, dose rate constant, radial dose function and anisotropy function. They show less than 1% uncertainty. The TG-43 based dosimetry data can be used not only to validate the dedicated treatment planning software (TPS), but also to introduce new complementary software to enhance the system performance in gynecological treatments.
钴 60 源通常可用于高剂量率（HDR）后装设备，特别是用于治疗妇科病变。GZP6 远程后装机（中国核电工程有限公司）利用（60）Co 源治疗腔内和腔内线恶性肿瘤。在这项研究中，使用 MCNP4C 蒙特卡罗（MC）代码研究了 GZP6 系统中三种源的 AAPM TG-43 剂量学参数，并将结果与其他可用的（60）Co HDR 源进行了比较。所提供的参数包括空气比释动能强度、剂量率常数、径向剂量函数和各向异性函数。它们的不确定度小于 1%。基于 TG-43 的剂量学数据不仅可用于验证专用治疗计划软件（TPS），还可引入新的补充软件，以增强妇科治疗中的系统性能。
