标题： 来自理想中子照射的中国参考成年男性和女性体素幻影的剂量转换系数 显示英文标题

标题： Dose conversion coefficients for Chinese reference adult male and female voxel phantoms from idealized neutron exposures

摘要： 基于中国参考成年人体素幻影CRAM和CRAF，针对从10-8 MeV到20 MeV的六种理想化外部中子照射情况，提出了一组新的通量到剂量转换系数。 体素幻影CRAM和 CRAF分别是从之前的幻影CNMAN和CNWM调整而来的，各个器官的质量已调整为中国参考数据。 器官吸收剂量和有效剂量的计算是使用蒙特卡罗输运代码MCNPX进行的。 所得的剂量转换系数与ICRP出版物116中发布的进行了比较，该出版物代表了参考高加索人种。 大多数器官的器官吸收剂量转换系数与ICRP出版物116的结果一致，然而，在某些器官和特定几何条件下观察到了明显的差异。 对于能量高于2 MeV的中子，在AP、PA、ROT和ISO几何条件下，中国参考成年人的有效剂量转换系数几乎与ICRP出版物116中的相同。 当能量范围从10-8 MeV到1 MeV时，在AP（5%）、PA（8%）和ROT（-4%）几何条件下差异在10%以内。 然而，当能量低于1 MeV时，在侧向和ISO几何条件下显示出相对较大的差异，分别为LLAT的-15%、RLAT的-20%和ISO的-12%。 显示英文摘要

摘要： A new set of fluence-to-dose conversion coefficients based on the Chinese reference adult voxel phantoms CRAM and CRAF are presented for six idealized external neutron exposures from 10-8 MeV to 20 MeV. The voxel phantoms CRAM and CRAF were adjusted from the previous phantoms CNMAN and CNWM respectively, and the masses of individual organs have been adjusted to the Chinese reference data. The calculation of organ-absorbed doses and effective doses were performed with the Monte Carlo transport code MCNPX. The resulting dose conversion coefficients were compared with those published in ICRP Publication 116, which represents the reference Caucasian. The organ-absorbed dose conversion coefficients of most organs are in good agreement with the results in ICRP Publication 116, however, obvious discrepancies are observed for some organs and certain geometries. For neutrons with energies above 2 MeV, the effective dose conversion coefficients of Chinese reference adult are almost identical to those of ICRP Publication 116 in AP, PA, ROT and ISO geometries. When energies range from 10-8 MeV to 1 MeV, differences are within 10% in AP (5%), PA (8%) and ROT (-4%) geometries. However, relatively large discrepancies are shown in lateral and ISO geometries when energies are below 1 MeV, with differences of -15% for LLAT, -20% for RLAT and -12% for ISO, respectively.