瓦里安扩充型动态楔形板的蒙特卡罗模拟与验证
基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板，建立动态楔形板的质量保证新工具。使用BEAMnrc的DYNJAWS组件模拟动态楔形板，建立加速器源模型，用DOSXYZnrc程序计算体模内的深度剂量和离轴剂量，获得不同角度楔形板的楔形因子和离轴剂量分布曲线，与相同条件的测量结果进行对比，验证动态楔形板模型的精确性。蒙特卡罗模拟结果与测量结果取得了很好的一致，偏差小于2％。表明使用蒙特卡罗程序建立扩充型动态楔形板模型是可行的，能够满足临床应用的质量保证需要。...
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| Published in | 核技术 Vol. 40; no. 12; pp. 26 - 30 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
广东省中医院 广州 510006%南方医科大学 广州 510515
2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-3219 |
| DOI | 10.11889/j.0253-3219.2017.hjs.40.120302 |
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| Abstract | 基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板，建立动态楔形板的质量保证新工具。使用BEAMnrc的DYNJAWS组件模拟动态楔形板，建立加速器源模型，用DOSXYZnrc程序计算体模内的深度剂量和离轴剂量，获得不同角度楔形板的楔形因子和离轴剂量分布曲线，与相同条件的测量结果进行对比，验证动态楔形板模型的精确性。蒙特卡罗模拟结果与测量结果取得了很好的一致，偏差小于2％。表明使用蒙特卡罗程序建立扩充型动态楔形板模型是可行的，能够满足临床应用的质量保证需要。 |
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| AbstractList | TL72; 基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板,建立动态楔形板的质量保证新工具.使用BEAMnrc的DYNJAWS组件模拟动态楔形板,建立加速器源模型,用DOSXYZnrc程序计算体模内的深度剂量和离轴剂量,获得不同角度楔形板的楔形因子和离轴剂量分布曲线,与相同条件的测量结果进行对比,验证动态楔形板模型的精确性.蒙特卡罗模拟结果与测量结果取得了很好的一致,偏差小于2%.表明使用蒙特卡罗程序建立扩充型动态楔形板模型是可行的,能够满足临床应用的质量保证需要. 基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板，建立动态楔形板的质量保证新工具。使用BEAMnrc的DYNJAWS组件模拟动态楔形板，建立加速器源模型，用DOSXYZnrc程序计算体模内的深度剂量和离轴剂量，获得不同角度楔形板的楔形因子和离轴剂量分布曲线，与相同条件的测量结果进行对比，验证动态楔形板模型的精确性。蒙特卡罗模拟结果与测量结果取得了很好的一致，偏差小于2％。表明使用蒙特卡罗程序建立扩充型动态楔形板模型是可行的，能够满足临床应用的质量保证需要。 |
| Abstract_FL | Background: Enhanced dynamic wedge (EDW) is commonly used to achieve dose uniformity in the target volume in radiotherapy. However, EDW must be verified before implementation in the treatment planning system. Purpose: This paper is to simulate the EDW of Varian linear accelerator by Monte Carlo method, and to construct a new tool for quality assurance of EDW. Methods: EDW is simulated with the DYNJAWS module of BEAMnrc to build the source model. Depth dose and off-axis dose are calculated by use of DOSXYZnrc in a phantom to generate the EDW factor and profiles of EDW at different angles. The model is validated based on the comparison of Monte Carlo simulation and real measurement results. Results: The simulation results are in good agreement with measurement results, and the deviation is less than 2%. Conclusion: It demonstrates that the EDW model based on Monte Carlo simulation is effective, which would achieve the requirement of quality assurance of EDW. |
| Author | 戴振晖;招什武;杨耕;朱琳;张白霖;朱远湖;靳怀志;王学涛;张煜 |
| AuthorAffiliation | 广东省中医院,广州510006;南方医科大学,广州510515 |
| AuthorAffiliation_xml | – name: 广东省中医院 广州 510006%南方医科大学 广州 510515 |
| Author_FL | ZHANG Yu ZHU Lin ZHANG Bailin ZHU Yuanhu ZHAO Shiwu JIN Huaizhi WANG Xuetao DAI Zhenhui YANG Geng |
| Author_FL_xml | – sequence: 1 fullname: DAI Zhenhui – sequence: 2 fullname: ZHAO Shiwu – sequence: 3 fullname: YANG Geng – sequence: 4 fullname: ZHU Lin – sequence: 5 fullname: ZHANG Bailin – sequence: 6 fullname: ZHU Yuanhu – sequence: 7 fullname: JIN Huaizhi – sequence: 8 fullname: WANG Xuetao – sequence: 9 fullname: ZHANG Yu |
| Author_xml | – sequence: 1 fullname: 戴振晖;招什武;杨耕;朱琳;张白霖;朱远湖;靳怀志;王学涛;张煜 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| Keywords | 扩充型动态楔形板 EDW 蒙特卡罗模拟 Monte Carlo simulation |
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| Notes | Background： Enhanced dynamic wedge （EDW） is commonly used to achieve dose uniformity in the target volume in radiotherapy. However, EDW must be verified before implementation in the treatment planning system. Purpose： This paper is to simulate the EDW of Varian linear accelerator by Monte Carlo method, and to construct a new tool for quality assurance of EDW. Methods： EDW is simulated with the DYNJAWS module of BEAMnrc to build the source model. Depth dose and off-axis dose are calculated by use of DOSXYZnrc in a phantom to generate the EDW factor and profiles of EDW at different angles. The model is validated based on the comparison of Monte Carlo simulation and real measurement results. Results： The simulation results are in good agreement with measurement results, and the deviation is less than 2%. Conclusion： It demonstrates that the EDW model based on Monte Carlo simulation is effective, which would achieve the requirement of quality assurance of EDW. 31-1342/TL DAI Zhenhui1, ZHAO Shiwu1, YANG Geng1 ,ZHU L |
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| Publisher | 广东省中医院 广州 510006%南方医科大学 广州 510515 |
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| Snippet | 基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板，建立动态楔形板的质量保证新工具。使用BEAMnrc的DYNJAWS组件模拟动态楔形板，建立加速器源模型，用DOSXYZnrc程序... TL72; 基于蒙特卡罗方法模拟Varian直线加速器扩充型动态楔形板,建立动态楔形板的质量保证新工具.使用BEAMnrc的DYNJAWS组件模拟动态楔形板,建立加速器源模型,用DOSXYZnrc程... |
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| SubjectTerms | 扩充型动态楔形板 蒙特卡罗模拟 |
| Title | 瓦里安扩充型动态楔形板的蒙特卡罗模拟与验证 |
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