摘要
开发了一个基于中国女性彩色解剖断层图像的体素剂量学模型VPCF,并用FLUKA程序计算了光子能量在0.02～10 MeV范围内的20个能量点、外照射方向为腹背向(AP)、背腹向(PA)的组织或器官剂量转换因子和有效剂量转换系数,并与ICRP 74号报告的推荐值、CRAM和Regina的计算值进行了比较。结果表明:VPCF有些器官(如膀胱)的剂量转换因子与ICRP 74号出版物差别较大;有效剂量转换系数的差别不如器官或组织的剂量转换因子明显;VPCF的有效剂量转换系数要大于ICRP 74号出版物推荐值、CRAM和Regina的计算值。
A voxel phantom of Chinese female called VPCF has been constructed. The FLUKA code was utilized for computation of dose conversion coefficients （DCCs） expressed in absorbed dose per air kerma or effective dose per air kerma free-in-air due to a broad parallel beam of mono-energetic photons impinging in anterior-posterior and posterior-anterior directions of the 20 mono-energetic photon beams of energies in the range of 20 keV--10 MeV. The resultant dose coefficients were compared with those from ICRP Publication 74, CRAM and Regina. The results indicate noticeable differences between VPCF and CRAM for some organ＇ s dose conversion coefficients （e. g. bladder） . Smaller differences for the effective dose conversion coefficient are found than for the dose conversion coefficients in individual organs. Comparing with ICRP Publication 74,Regina and CRAM, the VPCF＇ s effective dose conversion coefficients are larger.
出处
《辐射防护》
CAS
CSCD
北大核心
2013年第1期8-15,共8页
Radiation Protection
