利用 SunCHECK 对 halcyon 直线加速器中的 VMAT 的交付质量保证进行分析

IF 0.8 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Shinhaeng Cho, Yong Hyub Kim, Jea-Uk Jeong, Mee Sun Yoon, Taek-Keun Nam, Sung-Ja Ahn, Ju-Young Song
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引用次数: 0

摘要

本研究评估了基于计算的 IMRT DQA 程序 SunCHECK 应用于 Halcyon LINAC 的 VMAT DQA 时的剂量测定准确性。利用 Delta4 Phantom + 二极管探测器阵列设备生成虚拟 VMAT 治疗计划,以分析 SunCHECK 中剂量计算算法的准确性。分析结果表明,SunCHECK 中的计算剂量、计划剂量和测量的输出剂量之间存在很强的相关性。此外,还分析了在 VMAT 射束输送过程中出现 MLC 误差时 SunCHECK 计算出的剂量分布变化特征。在输送存在 MLC 位置误差的射束后,将通过日志文件计算得出的剂量学误差与使用 Delta4 Phantom + 进行测量得出的误差分析结果进行了比较。使用 SunCHECK 根据日志文件计算出的剂量学误差与使用 Delta4 Phantom + 通过传统的基于测量的 DQA 方法计算出的剂量误差显示出相似的趋势。这项研究结果验证了 SunCHECK 在剂量计算和分析 MLC 位置误差导致的剂量误差方面的准确性,从而确认了其在使用 Halcyon LINAC 进行 VMAT DQA 方面的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Analysis on the delivery quality assurance using SunCHECK for the VMAT in halcyon linear accelerator

Analysis on the delivery quality assurance using SunCHECK for the VMAT in halcyon linear accelerator

This study evaluated the dosimetric accuracy of SunCHECK, a calculation-based IMRT DQA program, when applied to VMAT DQA for the Halcyon LINAC. Virtual VMAT treatment plans were generated utilizing a Delta4 Phantom + diode detector array device to analyze the accuracy of the dose calculation algorithm in SunCHECK. The analysis revealed a strong correlation between the calculated dose in SunCHECK, the planned dose, and the measured delivery dose. The characteristics of dose distribution changes calculated by SunCHECK in the event of MLC errors during VMAT beam delivery were analyzed additionally. After delivering a beam with MLC position errors, the dosimetric error evaluated through log file-based calculations were compared with the error analysis findings obtained from measurements using the Delta4 Phantom + . The dosimetric error calculated based on the log file using SunCHECK showed a similar trend to the dose error calculated through the conventional measurement-based DQA method using a Delta4 Phantom + . The results of this study validate SunCHECK’s accuracy in dose calculation and analysis of dosimetric errors resulting from MLC position errors, thereby confirming its efficacy in VMAT DQA using the Halcyon LINAC.

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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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