Fluence-to-dose conversion coefficients based on the VIP-MAN anatomical model and mcnpx code for monoenergetic neutrons above 20 MeV
Fluence-to-dose conversion coefficients based on the VIP-MAN anatomical model and mcnpx code for monoenergetic neutrons above 20 MeV
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DOI：
10.1097/00004032-200108000-00011
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发表时间：
2001-08-01
期刊：
影响因子：
2.2
通讯作者：
Xu, XG
中科院分区：
文献类型：
--
作者：
Bozkurt, A;Chao, TC;Xu, XG
利用国家医学图书馆可见人计划的高分辨率横向彩色摄影图像开发的全身解剖模型VIP-Man，计算了一组新的高能中子注量-吸收剂量和注量-有效剂量转换系数。器官剂量计算是使用蒙特卡罗程序MCNPX对20 MeV到10,000 MeV之间的20束单能中子束在6种不同照射几何形状下进行的：前-后、后-前、左侧、右侧、各向同性和旋转。对于中子蒙特卡罗计算，基于图像的全身模型的结果在文献中是不可用的。VIP-Man的24个主要器官的吸收剂量结果以表格和精选数字的形式给出，与文献中报道的基于简化数学模型的结果进行了比较。VIP-Man产生高达40%的有效剂量值和许多器官剂量，因此表明过去报道的结果可能并不保守。
A new set of fluence-to-absorbed dose and fluence-to-effective dose conversion coefficients has been calculated for high-energy neutrons using a whole-body anatomical model, VIP-Man, developed from the high-resolution transversal color photographic images of the National Library of Medicine's Visible Human Project, Organ dose calculations were performed using the Monte Carlo code MCNPX for 20 monoenergetic neutron beams between 20 MeV and 10,000 MeV under 6 different irradiation geometries: anterior-posterior, posterior-anterior, left lateral, right lateral, isotropic, and rotational. For neutron Monte Carlo calculations, results based on an image-based whole-body model were not available in the literature. The absorbed dose results for 24 major organs of VIP-Man are presented in the form of tables and selected figures that compare with those based on simplified mathematical phantoms reported in the literature. VIP-Man yields up to 40% Larger values of effective dose and many organ doses, thus suggesting that the results reported in the past may not be conservative.