间接电离放射治疗束的组织最大剂量比/散射最大剂量比的经验公式。
Empirical equation for tissue-maximum ratios/scatter-maximum ratios for indirectly ionizing radiotherapy beams.
作者信息
Schell M C, Deye J A
出版信息
Med Phys. 1979 Jan-Feb;6(1):65-7. doi: 10.1118/1.594553.
DOI:10.1118/1.594553
PMID:440236
Abstract
A six-parameter equation has been fitted to the tissue-maximum ratio/scatter maximum ration (TMR/SMR) tables for 60Co, 4-, 6-, and 10-MV photon beams as well as the 35 MeV d leads to Be neutron beam. The empirical equation has been shown to fit the 60Co tissue-air ratio/scatter-air ratio (TAR/SAR) data equally well. The TMR/SMR model was developed from a three-parameter equation designed to eliminate the graphical extrapolation of zero-field size TARs.
摘要
已将一个六参数方程拟合到钴-60、4兆伏、6兆伏和10兆伏光子束以及35兆电子伏特氘束打铍中子束的组织最大剂量比/散射最大剂量比（TMR/SMR）表。该经验方程已被证明能同样很好地拟合钴-60组织空气比/散射空气比（TAR/SAR）数据。TMR/SMR模型是由一个旨在消除零射野尺寸TARs图形外推的三参数方程发展而来的。
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