Assessment of Dose Calculation Accuracy of Monaco Treatment Planning System for Effective Wedge Angle in Internal Wedged Fields using Two Different Analytical Methods.

Q3 Medicine

Journal of Biomedical Physics and Engineering Pub Date : 2025-02-01 DOI:10.31661/jbpe.v0i0.2409-1816

Ali Bahari, Seyed Salman Zakariaee, Hamed Rezaeejam, Ali Tarighatnia, Mikaeil Molazadeh

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引用次数: 0

Abstract

Background: In radiotherapy, the accuracy of dose calculation systems plays a key role in the treatment of cancer patients.

Objective: The current research aimed to evaluate the dose calculation accuracy of Monaco Treatment Planning System (TPS) in estimating the Effective Wedge Angle (EWA) using two different mathematical methods: Elekta formula and ICRU-24 formula.

Material and methods: In this experimental study, EWAs for different field sizes (5×5, 10×10, 15×15, 20×20, 25×25, and 30×30 cm²) at standard angles (15°, 30°, 45°, and 60°) were computed by the Monaco TPS using two different analytical methods. The practical EWAs were measured according to the conditions outlined in the Elekta formula and the ICRU-24 formula, and these measurements were compared with the results derived from the TPS.

Results: The planned and measured EWAs are consistent with the Elekta formula, and the error value was less than ±0.5 in all radiation fields and EWAs. In the ICRU-24 formula, the maximum deviation was ±2.6° between the computational and practical EWAs.

Conclusion: The Elekta-based analytical method demonstrates a good agreement between planned and measured EWAs, while the ICRU-24 formula exhibited the greatest discrepancies.

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内楔场有效楔角摩纳哥治疗计划系统剂量计算精度的两种不同分析方法评价

背景：在放射治疗中，剂量计算系统的准确性对肿瘤患者的治疗起着关键作用。目的：采用Elekta公式和ICRU-24公式两种不同的数学方法，评价摩纳哥治疗计划系统（Monaco Treatment Planning System， TPS）估算有效楔形角（Effective Wedge Angle， EWA）的剂量计算精度。材料和方法：在本实验研究中，采用两种不同的分析方法，用Monaco TPS计算不同场尺寸（5×5, 10×10, 15×15, 20×20, 25×25和30×30 cm2）在标准角度（15°，30°，45°和60°）下的EWAs。根据Elekta公式和ICRU-24公式中列出的条件测量实际EWAs，并将这些测量结果与TPS的结果进行比较。结果：规划和测量的EWAs与Elekta公式一致，各辐射场和EWAs误差值均小于±0.5。在ICRU-24公式中，计算EWAs与实际EWAs之间的最大偏差为±2.6°。结论：基于elekta的分析方法显示计划EWAs与测量EWAs之间的一致性较好，而ICRU-24公式差异最大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Biomedical Physics and Engineering Medicine-Radiology, Nuclear Medicine and Imaging

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Biomedical Physics and Engineering (JBPE) is a bimonthly peer-reviewed English-language journal that publishes high-quality basic sciences and clinical research (experimental or theoretical) broadly concerned with the relationship of physics to medicine and engineering.