[用蒙特卡罗方法估计单个直线加速器的初级电子束参数]。

Q4 Medicine

中国医疗器械杂志 Pub Date : 2025-07-30 DOI:10.12455/j.issn.1671-7104.240632

Yisong He, Hang Yu, Yuchuan Fu, Jinyou Hu, Lian Zou

{"title":"[用蒙特卡罗方法估计单个直线加速器的初级电子束参数]。","authors":"Yisong He, Hang Yu, Yuchuan Fu, Jinyou Hu, Lian Zou","doi":"10.12455/j.issn.1671-7104.240632","DOIUrl":null,"url":null,"abstract":"Objective: To estimate the primary electron beam parameters (PEB), including energy, radial intensity distribution and average angular divergence, of the individual linear accelerator using the Monte Carlo method.Methods: A model of the treatment head and a standard field were built by BEAMnrc, and the dose distribution was simulated in water phantoms by DOSXYZnrc to obtain the percentage depth dose curve and off-axis ratio. By debugging the parameters mentioned above until the simulation and measurement results could match.Results: The simulation and measurement results could achieve the best match when the parameters mentioned above were 6.25 MeV, 0.95 mm and 0.1° respectively.Conclusion: The PEB of a linear accelerator could have a significant impact on the output beam characteristics. Monte Carlo estimation is one of the most crucial steps in establishing an individual linear accelerator model.","PeriodicalId":52535,"journal":{"name":"中国医疗器械杂志","volume":"49 4","pages":"375-382"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Estimation of Primary Electron Beam Parameters of Individual Linear Accelerator Using Monte Carlo Method].\",\"authors\":\"Yisong He, Hang Yu, Yuchuan Fu, Jinyou Hu, Lian Zou\",\"doi\":\"10.12455/j.issn.1671-7104.240632\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Objective: To estimate the primary electron beam parameters (PEB), including energy, radial intensity distribution and average angular divergence, of the individual linear accelerator using the Monte Carlo method.Methods: A model of the treatment head and a standard field were built by BEAMnrc, and the dose distribution was simulated in water phantoms by DOSXYZnrc to obtain the percentage depth dose curve and off-axis ratio. By debugging the parameters mentioned above until the simulation and measurement results could match.Results: The simulation and measurement results could achieve the best match when the parameters mentioned above were 6.25 MeV, 0.95 mm and 0.1° respectively.Conclusion: The PEB of a linear accelerator could have a significant impact on the output beam characteristics. Monte Carlo estimation is one of the most crucial steps in establishing an individual linear accelerator model.\",\"PeriodicalId\":52535,\"journal\":{\"name\":\"中国医疗器械杂志\",\"volume\":\"49 4\",\"pages\":\"375-382\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"中国医疗器械杂志\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://doi.org/10.12455/j.issn.1671-7104.240632\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Medicine\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国医疗器械杂志","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.12455/j.issn.1671-7104.240632","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Medicine","Score":null,"Total":0}

引用次数: 0

摘要

目的：用蒙特卡罗方法估计单个直线加速器的初级电子束参数（PEB），包括能量、径向强度分布和平均角散度。方法：采用BEAMnrc软件建立处理头模型和标准场模型，采用DOSXYZnrc软件模拟水影中的剂量分布，得到百分比深度剂量曲线和离轴比。通过对上述参数的调试，直到仿真结果与测量结果相匹配。结果：当上述参数分别为6.25 MeV、0.95 mm和0.1°时，仿真结果与测量结果吻合最好。结论：直线加速器的PEB对输出束流特性有显著影响。蒙特卡罗估计是建立单个线性加速器模型的最关键步骤之一。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

[Estimation of Primary Electron Beam Parameters of Individual Linear Accelerator Using Monte Carlo Method].

Objective: To estimate the primary electron beam parameters (PEB), including energy, radial intensity distribution and average angular divergence, of the individual linear accelerator using the Monte Carlo method.

Methods: A model of the treatment head and a standard field were built by BEAMnrc, and the dose distribution was simulated in water phantoms by DOSXYZnrc to obtain the percentage depth dose curve and off-axis ratio. By debugging the parameters mentioned above until the simulation and measurement results could match.

Results: The simulation and measurement results could achieve the best match when the parameters mentioned above were 6.25 MeV, 0.95 mm and 0.1° respectively.

Conclusion: The PEB of a linear accelerator could have a significant impact on the output beam characteristics. Monte Carlo estimation is one of the most crucial steps in establishing an individual linear accelerator model.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

中国医疗器械杂志 Medicine-Medicine (all)

CiteScore

0.40

自引率

0.00%

发文量

8086

期刊介绍： Chinese Journal of Medical Instrumentation mainly reports on the development, progress, research and development, production, clinical application, management, and maintenance of medical devices and biomedical engineering. Its aim is to promote the exchange of information on medical devices and biomedical engineering in China and turn the journal into a high-quality academic journal that leads academic directions and advocates academic debates.