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首页> 外文期刊>Radiation Protection Dosimetry >A COMPARISON OF ORGAN DOSES BETWEEN MATHEMATICAL AND VOXEL PHANTOMS WITH THE DS02 PHOTON FLUENCES
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A COMPARISON OF ORGAN DOSES BETWEEN MATHEMATICAL AND VOXEL PHANTOMS WITH THE DS02 PHOTON FLUENCES

机译：DS02光子密度在数学和体素幻象之间的有机剂量比较

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摘要

The purpose of this study is to quantify dosimetric differences if modern sophisticated voxel phantoms were used in the dosim-etry system DS02 rather than the mathematical phantoms. The mathematical models (ADAM and EVA) and voxel phantoms (REX and REGINA) developed in Germany allow a useful comparison as they are very close in body weight, body height and organ masses. In this study, organ doses are calculated with published fluence-to-absorbed-dose conversion coefficients derived from those two model sets for unidirectional plane beam irradiation geometries, with DS02 photon energy spectra at various distances from the hypocentre in Hiroshima. Results showed that organ doses from mathematical models generally agree well with those from voxel phantoms except for a few organs at lateral irradiation geometries and eye lenses at antero-posterior irradiation, even though there were significant differences between the two phantom sets and various uncertainties in dose calculations.
机译：本研究的目的是量化在剂量系统DS02中使用现代复杂的体素体模而不是数学体模时的剂量学差异。德国开发的数学模型（ADAM和EVA）和体素模型（REX和REGINA）可以进行有用的比较，因为它们的体重，身高和器官质量非常接近。在这项研究中，器官剂量是使用已发布的从单模平面束辐照几何形状的这两个模型集得出的注量到吸收剂量的转换系数来计算的，其中DS02光子能谱位于距广岛震中不同距离处。结果表明，数学模型的器官剂量通常与体素模型的器官剂量基本吻合，除了在侧向辐射几何形状的一些器官和前后照射时的眼镜片，尽管两个模型之间存在显着差异并且剂量存在各种不确定性计算。

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  • 来源
    《Radiation Protection Dosimetry》 |2012年第1期|p.49-55|共7页
  • 作者

    Jing Chen; George D. Kerr; Harry M. Cullings;

  • 作者单位

    Radiation Protection Bureau, Health Canada, 2720 Riverside Drive, Ottawa, Canada K1A 0K9;

    Department of Statistics, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami-ku,Hiroshima 732-0815, Japan,Kerr Consulting, 1417 Paxton Drive, Knoxville, TN 37918-8012, USA;

    Department of Statistics, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami-ku,Hiroshima 732-0815, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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