Blunck Ch, Becker F, Urban M
Institute of Radiation Research, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
Radiat Prot Dosimetry. 2011 Mar;144(1-4):497-500. doi: 10.1093/rpd/ncq329. Epub 2010 Nov 2.
In nuclear medicine therapies, people working with beta radiators such as (90)Y may be exposed to non-negligible partial body doses. For radiation protection, it is important to know the characteristics of the radiation field and possible dose exposures at relevant positions in the working area. Besides extensive measurements, simulations can provide these data. For this purpose, a movable hand phantom for Monte Carlo simulations was developed. Specific beta radiator handling scenarios can be modelled interactively with forward kinematics or automatically with an inverse kinematics procedure. As a first investigation, the dose distribution on a medical doctor's hand injecting a (90)Y solution was measured and simulated with the phantom. Modelling was done with the interactive method based on five consecutive frames from a video recorded during the injection. Owing to the use of only one camera, not each detail of the radiation scenario is visible in the video. In spite of systematic uncertainties, the measured and simulated dose values are in good agreement.
在核医学治疗中，从事与β辐射源（如钇-90）相关工作的人员可能会受到不可忽视的局部身体剂量照射。为了进行辐射防护，了解辐射场的特性以及工作区域相关位置可能的剂量暴露情况非常重要。除了广泛的测量之外，模拟可以提供这些数据。为此，开发了一种用于蒙特卡罗模拟的可移动手部模型。特定的β辐射源操作场景可以通过正向运动学进行交互式建模，也可以通过逆运动学程序自动建模。作为首次研究，使用该模型对一名注射钇-90溶液的医生手部的剂量分布进行了测量和模拟。建模是基于注射过程中录制的视频的五个连续帧，采用交互式方法完成的。由于仅使用了一台摄像机，视频中并非辐射场景的每个细节都可见。尽管存在系统不确定性，但测量和模拟的剂量值仍吻合良好。
