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使用ICRP成人参考voxel幻影的剂量系数,用于使用Geant4/GATE模拟进行所选放射性药物的内部剂量测量

S Kaddouch¹, N El Khayati¹

¹ESMaR, Faculty of Science, Mohammed V University in Rabat, P.O. Box 1014, Rabat, Morocco.

Radiation protection dosimetry

|May 9, 2025

概括

这项研究评估了在目标器官中吸收的剂量,使用使用Geant4/GATE和voxel幻影的蒙特卡洛模拟. 它提供放射性药物的剂量系数,帮助内部剂量测量研究.

科学领域:

医学物理医学物理
辐射科学辐射科学
计算生物学计算生物学

背景情况:

内部剂量计研究侧重于对目标器官的吸收剂量评估.
蒙特卡洛 (MC) 方法对于准确的吸收剂量计算至关重要.
Geant4/GATE是一个广泛使用的MC模拟工具包.

研究的目的:

为了评估放射性药物的吸收剂量,使用ICRP成人参考voxel幻影和Geant4/GATE.
为各种目标地区确定特定的吸收分数和剂量系数.
根据现有的文献数据验证模拟结果.

主要方法:

使用Geant4/GATE蒙特卡洛代码进行数值模拟.
雇佣了国际辐射保护委员会 (ICRP) 的成年人参考voxel幻影.
对从10 keV到10 MeV的光子能量的估计特定吸收分数.
针对20个目标区域的精选放射性核素,计算吸收剂量和确定剂量系数.

主要成果:

在广泛的光子能量范围内成功估计了特定的吸收分数.
使用指定的幻影和仿真平台计算了几个放射性核素的吸收剂量.
为20个目标器官生成了剂量系数,使得可以进行详细的内部剂量测量评估.
结果与先前公布的数据有很好的一致性,证实了模拟的准确性.

结论:

结合ICRP voxel 幻影,Geant4/GATE 平台是一个可靠的内部剂量计工具.
该研究为放射性药物内部剂量评估提供了有价值的剂量系数.
这项研究有助于核医学中吸收剂量计算的准确性和验证.

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