PDF(Pubmed)
Abstract：
UNASSIGNED: Most brachytherapy treatment planning system (TPS) commissioning requires data input based on the American Association of Physicists in Medicine Task Group-43 formalism. The commissioning accuracy is very important for dose calculation. The aim of this study is the implementation of a brachytherapy TPS into a clinical environment and check the TPS calculated dose accuracy.
UNASSIGNED: After introducing data of the different catheters (CIS Bio International, Saclay, France), composed of several Cesium-137 Eckert and Ziegler BEBIG CSM-11 radioactive sources; for XiO (CMS, St. Louis) brachytherapy TPS, the TPS dose calculation accuracy was investigated by comparing between the TPS calculated dose distribution (DD) for all the catheters with (1) the measuring DD using EBT3 GAFChromic film and (2) calculating DD by egs_brachy (Electron Gamma Shower, National Research Council of Canada) Monte Carlo simulation. The phantom used for this study consists of six PTW slabs 30 cm × 30 cm × 1 cm of polymethyl methacrylate with a Delouche MEDpro applicator on the top. The TPS DD was calculated on the computed tomography scan of this phantom.
UNASSIGNED: PTW VeriSoft version 6.0.1.7 (PTW-Freiburg, Germany) software was used for analyzing scanned films and to perform the comparison based on the gamma index distribution.
UNASSIGNED: For each catheter, the gamma index distribution showed agreement >95% of all pixels in both verification methods, with gamma ≤1.
UNASSIGNED: We confirm the commissioning accuracy and that the TPS can be used for clinical purposes.
UNASSIGNED: After introducing data of the different catheters (CIS Bio International, Saclay, France), composed of several Cesium-137 Eckert and Ziegler BEBIG CSM-11 radioactive sources; for XiO (CMS, St. Louis) brachytherapy TPS, the TPS dose calculation accuracy was investigated by comparing between the TPS calculated dose distribution (DD) for all the catheters with (1) the measuring DD using EBT3 GAFChromic film and (2) calculating DD by egs_brachy (Electron Gamma Shower, National Research Council of Canada) Monte Carlo simulation. The phantom used for this study consists of six PTW slabs 30 cm × 30 cm × 1 cm of polymethyl methacrylate with a Delouche MEDpro applicator on the top. The TPS DD was calculated on the computed tomography scan of this phantom.
UNASSIGNED: PTW VeriSoft version 6.0.1.7 (PTW-Freiburg, Germany) software was used for analyzing scanned films and to perform the comparison based on the gamma index distribution.
UNASSIGNED: For each catheter, the gamma index distribution showed agreement >95% of all pixels in both verification methods, with gamma ≤1.
UNASSIGNED: We confirm the commissioning accuracy and that the TPS can be used for clinical purposes.
摘要：
UNASSIGNED：大多数近距离放射治疗治疗计划系统（TPS）的调试都需要基于美国医学物理学家协会任务组-43形式主义的数据输入。调试精度对于剂量计算非常重要。这项研究的目的是在临床环境中实施近距离放射治疗TPS，并检查TPS计算的剂量准确性。
UNASSIGNED：引入不同导管的数据后（CISBioInternational，Saclay,法国),由几种铯-137埃克特和齐格勒BEBIGCSM-11放射源组成；对于XiO(CMS，圣路易斯)近距离放射治疗TPS，通过比较所有导管的TPS计算剂量分布（DD）与（1）使用EBT3GAFChromic薄膜测量DD和（2）通过egs_brachy计算DD（电子伽玛淋浴，加拿大国家研究委员会)蒙特卡洛模拟。用于本研究的体模由六个PTW平板30cm×30cm×1cm的聚甲基丙烯酸甲酯组成，顶部装有DeloucheMEDpro涂抹器。在该体模的计算机断层扫描扫描上计算TPSDD。
未经批准：PTWVeriSoft6.0.1.7版（PTW-Freiburg，德国）软件用于分析扫描的胶片，并根据伽马指数分布进行比较。
未授权：对于每个导管，在两种验证方法中，伽马指数分布显示>95%的所有像素一致，gamma≤1。
UNASSIGNED：我们确认了调试的准确性，并且TPS可用于临床目的。
UNASSIGNED：引入不同导管的数据后（CISBioInternational，Saclay,法国),由几种铯-137埃克特和齐格勒BEBIGCSM-11放射源组成；对于XiO(CMS，圣路易斯)近距离放射治疗TPS，通过比较所有导管的TPS计算剂量分布（DD）与（1）使用EBT3GAFChromic薄膜测量DD和（2）通过egs_brachy计算DD（电子伽玛淋浴，加拿大国家研究委员会)蒙特卡洛模拟。用于本研究的体模由六个PTW平板30cm×30cm×1cm的聚甲基丙烯酸甲酯组成，顶部装有DeloucheMEDpro涂抹器。在该体模的计算机断层扫描扫描上计算TPSDD。
未经批准：PTWVeriSoft6.0.1.7版（PTW-Freiburg，德国）软件用于分析扫描的胶片，并根据伽马指数分布进行比较。
未授权：对于每个导管，在两种验证方法中，伽马指数分布显示>95%的所有像素一致，gamma≤1。
UNASSIGNED：我们确认了调试的准确性，并且TPS可用于临床目的。
