A computational tool based on voxel geometry for dose reconstruction of a radiological accident due to external exposure.
A computational tool based on voxel geometry for dose reconstruction of a radiological accident due to external exposure.
复制标题
一种基于体素几何的计算工具，用于外部照射引起的放射事故的剂量重建。
DOI：
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发表时间：
2004
影响因子：
1
通讯作者：
J. Bottollier
中科院分区：
文献类型：
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作者：
A. Lemosquet;I. Clairand;L. de Carlan;D. Franck;I. Aubineau;J. Bottollier
在过度暴露于电离辐射的情况下，对生物体吸收剂量的估计是评估这种暴露的生物学后果的一个重要指标。物理剂量学方法要么基于事故的真实重建，要么基于物理幻影，要么基于计算技术。使用蒙特卡罗模拟与几何模型相关联的工具是非常强大的，因为它们提供了在各种意外情况下忠实地模拟受害者和环境以进行剂量计算的可能性。他们的工作提出了一种新的计算工具，称为SESAME，致力于基于与MCNP蒙特卡洛代码相关的受害者真实医学图像构建的拟人化体素幻象的辐射事故剂量重建。作为第一步，该实用程序使用物理组织等效模体通过实验手段对中子进行了验证。
In the case of overexposure to ionising radiation, estimation of the absorbed dose in the organism is an important indicator for evaluating the biological consequences of this exposure. The physical dosimetry approach is based either on real reconstruction of the accident, using physical phantoms, or on calculation techniques. Tools using Monte Carlo simulations associated with geometric models are very powerful since they offer the possibility to simulate faithfully the victim and the environment for dose calculations in various accidental situations. Their work presents a new computational tool, called SESAME, dedicated to dose reconstruction of radiological accidents based on anthropomorphic voxel phantoms built from real medical images of the victim in association with the MCNP Monte Carlo code. The utility was, as a first step, validated for neutrons by experimental means using a physical tissue-equivalent phantom.