...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Danishgah-i Ulum-i Pizishki va Khadamat-i Bihdashti-Darmani Shahid Sadugi Yazd. Majallah >Calculating Error Percentage in Using Water Phantom Instead of Soft Tissue Concerning 103Pd Brachytherapy Source Distribution via Monte Carlo Method
【24h】

Calculating Error Percentage in Using Water Phantom Instead of Soft Tissue Concerning 103Pd Brachytherapy Source Distribution via Monte Carlo Method

机译：通过蒙特卡洛方法计算水幻影代替103Pd近距离放射治疗源分布的软组织时使用误差法计算的误差百分比

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Introduction: 103Pd is a low energy source, which is used in brachytherapy. According to the standards of American Association of Physicists in Medicine, dosimetric parameters determination of brachytherapy sources before the clinical application was considered significantly important. Therfore, the present study aimed to compare the dosimetric parameters of the target source using the water phantom and soft tissue.Methods: According to the TG-43U1 protocol, the dosimetric parameters were compared around the 103Pd source in regard with water phantom with the density of 0.998 gr/cm3 and the soft tissue with the density of 1.04 gr/cm3 on the longitudinal and transverse axes using the MCNP4C code and the relative differences were compared between the both conditions.Results: The simulation results indicated that the dosimetric parameters depended on the radial dose function and the anisotropy function in the application of the water phantom instead of soft tissue up to a distance of 1.5 cm, ?between which a good consistency was observed. With increasing the distance, the difference increased, so as within 6 cm from the source, this difference increased to 4%.Conclusions: The results of? the soft tissue phantom compared with those of the water phantom indicated 4% relative difference at a distance of 6 cm from the source. Therefore, the results of the water phantom with a maximum error of 4% can be used in practical applications instead of soft tissue. Moreover, the amount of differences obtained in each distance regarding using the soft tissue phantom could be corrected.
机译：简介：103Pd是一种低能量来源，用于近距离放射治疗。根据美国医学物理学会的标准，在临床应用之前确定近距离放射治疗源的剂量参数非常重要。因此，本研究旨在比较使用水体模和软组织的目标源的剂量学参数。方法：根据TG-43U1协议，比较103Pd源周围与密度相关的水体模型的剂量学参数。用MCNP4C编码对软组织的纵向和横向密度分别为0.998 gr / cm3和密度为1.04 gr / cm3的软组织以及两种条件下的相对差异进行了比较。结果：仿真结果表明，剂量参数取决于径向剂量函数和各向异性函数在应用水模代替软组织时的最大距离为1.5 cm，两者之间观察到良好的一致性。随着距离的增加，差异增加，例如，在距源6厘米之内，差异增加到4％。与水体模相比，软体模体与水体模体之间的相对差异为4％，与源的距离为6 cm。因此，水模的结果的最大误差为4％，可代替软组织用于实际应用。而且，可以校正关于使用软组织体模在每个距离中获得的差异量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号