Validation of the preconfigured Varian Ethos Acuros XB Beam Model for treatment planning dose calculations: A dosimetric study.
Validation of the preconfigured Varian Ethos Acuros XB Beam Model for treatment planning dose calculations: A dosimetric study.
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DOI：
10.1002/acm2.13056
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发表时间：
2020-12
影响因子：
2.1
通讯作者：
Aland T
中科院分区：
文献类型：
--
作者：
Hu Y;Byrne M;Archibald-Heeren B;Collett N;Liu G;Aland T
瓦里安（美国加州帕洛阿尔托）最近发布了一个在线适应性治疗平台Ethos，该平台引入了一个新的剂量预览和自动计划生成模块，尽管与现有的Halcyon直线加速器共享相同的射束数据。该模块集成了预配置射束模型和Acuros XB算法（Ethos AXB模型），以根据初始注量优化生成最终剂量计算。在这项研究中，我们通过将Ethos AXB模型与Halcyon AXB模型、Halcyon各向异性分析算法（AAA）模型以及在Ethos直线加速器上获得的测量结果进行比较，全面验证了Ethos AXB模型的准确性。结果表明，Ethos AXB模型在基本和复杂计算中的剂量测定准确度与Halcyon AXB模型相当（如果不是上级的话），同时其在调制和非均匀计划中的剂量测定准确度优于Halcyon AAA模型。尽管使用了相同的算法，但Ethos AXB型号和Halcyon AXB型号在一系列测试中仍显示出差异，尽管这些差异在临床环境中主要不显著。本研究成功验证了Ethos AXB模型的准确性，认为其适用于当前的临床范围。在这项研究的基础上，临床物理学家可以在实施Ethos系统时进行数据验证而不是完整的数据调试，从而采用更有效的方法进行Ethos安装。
Varian (Palo Alto, California, United States) recently released an online adaptation treatment platform, Ethos, which has introduced a new Dose Preview and Automated Plan Generation module despite sharing identical beam data with the existing Halcyon linac. The module incorporates a preconfigured beam model and the Acuros XB algorithm (Ethos AXB model) to generate final dose calculations from an initial fluence optimization. In this study, we comprehensively validated the accuracy of the Ethos AXB model by comparing it against the Halcyon AXB model, the Halcyon Anisotropic Analytical Algorithm (AAA) model, and measurements acquired on an Ethos linac. Results indicated that the Ethos AXB model demonstrated a comparable if not superior dosimetric accuracy to the Halcyon AXB model in basic and complex calculations, and at the same time its dosimetric accuracy in modulated and heterogeneous plans was better than that of the Halcyon AAA model. Despite the fact that the same algorithm was utilized, the Ethos AXB model and the Halcyon AXB model still exhibited variations across a range of tests, although these variations were predominantly insignificant in the clinical environment. The accuracy of the Ethos AXB model has been successfully verified in this study and is considered appropriate for the current clinical scope. On the basis of this study, clinical physicists can perform a data validation instead of a full data commissioning when implementing the Ethos system, thereby adopting a more efficient approach for Ethos installation.
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影响因子：
3.8
作者：
Han, Tao;Followill, David;Mourtada, Firas
通讯作者：
Mourtada, Firas
影响因子：
1.2
作者：
Aland, Trent;Walsh, Anthony;Devlin, Aimee
通讯作者：
Devlin, Aimee
影响因子：
3.8
作者：
Kan, Monica W. K.;Leung, Lucullus H. T.;Yu, Peter K. N.
通讯作者：
Yu, Peter K. N.
影响因子：
3.8
作者：
Han, Tao;Mourtada, Firas;Howell, Rebecca
通讯作者：
Howell, Rebecca
DOI：
10.1186/1748-717x-6-82
发表时间：
2011-07-19
期刊：
Radiation oncology (London, England)
影响因子：
--
作者：
Fogliata A;Nicolini G;Clivio A;Vanetti E;Cozzi L
通讯作者：
Cozzi L