Commissioning and validation of Radixact beam model in RayStation treatment planning system

IF 2.5 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences Pub Date : 2025-08-19 DOI:10.1016/j.jrras.2025.101892

Guyu Dai , Qing Xiao , Qiang Wang , Long Bai , Hang Yu , Xiangbin Zhang , Xianhu Zeng , Renming Zhong , Guangjun Li , Sen Bai

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引用次数: 0

Abstract

Purpose

While the Radixact tomotherapy system with iDMS typically uses proprietary planning software, third-party systems like RayStation offer alternative planning solutions. This study details the comprehensive commissioning process for the Radixact beam model in the RayStation treatment planning system.

Methods

The beam model commissioning process included 5 parts: model creation and validation, fine-tuning of parameters, creation of the treatment couch, adjustment of dose normalization, and verification of the model. In the step of parameters tuning, minimum leaf open and close time, and transverse profile were adjusted. Five plans were designed to create the structure set of treatment couch. The dose normalization was adjusted to calibrate the calculated absolute dose with the measurement of 5 plans. ArcCHECK was used to measure patient plans to verify the model.

Results

Minimum leaf open and close time were both set to 0.06 s, the average gamma passing rate (GPR) of transverse curves compared with gold beam data improved from 71.23 % to 98.60 % after adjustment. The final couch structure contained two parts: up and down with the density of 0.950 and 1.150 g/cm³. The originally calculated absolute dose was about 2 % lower, therefore, the value of dose normalization was increased by 2 % to 1.4399e-9. The average 3 %/2 mm GPR of the final model was 97.87 %, 98.70 %, and 99.10 % for plans of 1 cm, 2.5 cm, and 5 cm jaw width, respectively.

Conclusion

The results showed that adjustment of beam models, creation of treatment couch, and adjustment of dose normalization should be taken into special consideration. After adjustment, the Radixact model in Raystation could be used in the clinic.

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RayStation治疗计划系统中Radixact光束模型的调试与验证

虽然带有iDMS的Radixact断层治疗系统通常使用专有的规划软件，但像RayStation这样的第三方系统提供了替代的规划解决方案。本研究详细介绍了RayStation治疗计划系统中Radixact光束模型的全面调试过程。方法束流模型调试过程包括模型创建与验证、参数微调、治疗台创建、剂量归一化调整、模型验证5个部分。在参数调整步骤中，调整叶片的最小开合时间和横向轮廓。设计了五个平面来创建治疗沙发的结构集。调整剂量归一化，用5个方案的测量校准计算出的绝对剂量。使用ArcCHECK测量患者计划以验证模型。结果叶片最小开合时间均为0.06 s，与金束数据相比，调整后横向曲线平均伽马通过率（GPR）由71.23%提高到98.60%。最终沙发结构分为上下两部分，密度分别为0.950和1.150 g/cm3。最初计算的绝对剂量降低了约2%，因此，剂量归一化值增加了2%，达到1.4399e-9。下颌宽度为1 cm、2.5 cm和5 cm时，最终模型的平均3% /2 mm GPR分别为97.87%、98.70%和99.10%。结论应特别注意光束模型的调整、治疗台的创建和剂量归一化的调整。Raystation中的Radixact模型经调整后可用于临床。

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 Radiation Research and Applied Sciences MULTIDISCIPLINARY SCIENCES-

自引率

5.90%

发文量

130

审稿时长

16 weeks

期刊介绍： Journal of Radiation Research and Applied Sciences provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and applications of nuclear, radiation and isotopes in biology, medicine, drugs, biochemistry, microbiology, agriculture, entomology, food technology, chemistry, physics, solid states, engineering, environmental and applied sciences.