A comparison between GATE and MCNPX for photon dose calculations in radiation protection using a male voxel phantom
A comparison between GATE and MCNPX for photon dose calculations in radiation protection using a male voxel phantom
复制标题
使用男性体素模型进行辐射防护中光子剂量计算的 GATE 和 MCNPX 之间的比较
DOI：
10.1016/j.radphyschem.2018.12.003
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发表时间：
2019-04-01
影响因子：
2.9
通讯作者：
Sun, Liang
中科院分区：
文献类型：
--
作者：
Cui, Tiantian;Li, Zhanpeng;Sun, Liang
这项工作的目的是验证GATE外光子束剂量学计算在辐射防护。在这项工作中，GATE标准，利弗莫尔和佩内洛普物理列表（Rs）和MCNPX的韩国典型MAN-2（KTMAN-2）体素化体模计算的注量剂量转换系数。模拟了10 keV ~ 10 MeV单能光子束的六种辐照几何构型：前后（AP）、后前（PA）、左外侧（LLAT）、右外侧（RLAT）、旋转（ROT）和各向同性（ISO）。将GATE和MCNPX的模拟结果进行了比较，结果表明，GATE的模拟结果与MCNPX的模拟结果吻合良好，在能量大于30 keV时，平均精度优于2.24%。虽然GATE标准和Penelope PL和MCNPX都有良好的一致性，但Livermore PL具有更好的稳定性，并且比标准和Penelope PL略准确。使用GATE生成的KTMAN-2器官的剂量测定结果可作为补充数据。结果表明，GATE可以安全地用于外照射光子束剂量测量。这使得GATE成为外部辐射防护中成像和吸收剂量的蒙特卡罗建模的可行选择。
The purpose of this work was to validate GATE external photon beam dosimetry calculations in radiological protection. In this work, GATE Standard, Livermore and Penelope physics lists (Rs) and MCNPX were used to calculate fluence-dose conversion coefficients for Korean Typical MAN-2 (KTMAN-2) voxelized phantom. Six irradiation geometries, anterior-posterior (AP), posterior-anterior (PA), left lateral (LLAT), right lateral (RLAT), rotational (ROT) and isotropic (ISO) for monoenergetic photon beams from 10 keV to 10 MeV were simulated. Compared the simulation results between GATE and MCNPX, it was shown that the GATE results agreed well with MCNPX results with an average accuracy better than 2.24% for energies above 30 keV. Although good agreements were found for both GATE Standard and Penelope PLs and MCNPX, Livermore PL has better stability and it is slightly more accurate than Standard and Penelope PLs. Dosimetric results generated with GATE for the organs of KTMAN-2 are available as supplemental data. The results indicate that GATE could be safely used for external photon beam dosimetry. This makes GATE a viable option for Monte Carlo modelling of both imaging and absorbed dose in external radiological protection.