Skin Dosimetry of Some Beta Sources using the VARSKIN2 Code

Iranian Journal of Medical Physics

Ali Asghar Mowlavi¹  Azam Sadat Afzali² 

[1] Associate Professor, Physics Dept., School of Sciences, Sabzevar Tarbiat Moallem University, Iran;M.Sc., in Physics,School of Sciences, Sabzevar Tarbiat Moallem University, Iran;

关键词: Beta sources;    Radioactive Contamination on Skin;    Absorbed Dose;    VARSKIN2 Code;   

DOI  :  10.22038/ijmp.2009.7289

来源: DOAJ

【 摘 要 】

Introduction: Skin dose and depth dose distribution of some beta sources that can contaminate skin or protective clothing covering the skin have been calculated using VARSKIN2. Materials and Methods: In this research, absorbed dose to skin and depth dose from the skin surface have been calculated for 90Sr/90Y, 147Pm, 32P beta emitter radioisotopes by using input parameters: activity of source, cover thickness, cover density, air gap thickness, radiation time and different source geometries. Results: Absorbed dose variation was calculated for beta sources in different source forms, namely, point, 2-D disk, cylindrical, spherical and slab sources. The results show that a cylindrical source causes the minimum damage to skin cells. Therefore, this shape of source is the best with respect to radiation protection. Discussion and conclusion: The VARSKIN2 code is a very useful tool for skin dosimetry, as well being fast, accurate and user friendly. It can be used for dose optimization calculations especially for beta sources over human skin.

【 授权许可】

Unknown