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用Varex VF-80/μXHP X射线装置的剂量测量表征,使用表面放射治疗的开放端应用器

Muhammad Zeeshan¹, Yikai Wu¹, Zhongyu Qi¹

¹School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui, China.

Journal of applied clinical medical physics

|November 24, 2025

概括

这项研究验证了用于皮肤癌治疗的VF-80/μXHP千伏X射线装置. 使用电离室和蒙特卡洛模拟的剂量测量分析证实它适用于低kV辐射疗法应用.

科学领域:

医学物理医学物理
放射治疗物理物理
辐射剂量计辐射剂量计

背景情况:

千伏 (kV) 的X射线单位 (50-150 kVp) 对于皮肤癌治疗至关重要.
精确的剂量测量表征对于在低kV疗法中准确的剂量递送至关重要.
这项研究的重点是验证VF-80/μXHP (80 kV, 100 W) 的X射线系统.

研究的目的:

为了描述VF-80/μXHP千伏X射线装置的特征.
评估不同应用器 (PMMA,不钢) 和能量对剂量计的影响.
为了验证临床应用的深度剂量数据.

主要方法:

在固体水幻影中使用了PTW 34013平行板电离室.
使用TOPAS代码进行蒙特卡洛 (MC) 模拟.
测量机器输出,应用器泄漏,半值层 (HVL) 和百分比剂量深度 (PDD) 曲线.
结果与BJR 25补充数据进行比较.

主要成果:

评估了大约40个X射线束.
在电离室测量和TOPAS MC计算之间显示出强烈的一致性.
与BJR 25补充的协议在50kV的1.9%和70kV的0.5%之间.
电离室和MC的结果显示出了很好的一致性.

结论:

已经彻底分析了VF-80/μXHPX射线装置的剂量计数据.
使用PTW 34013电离室和TOPAS MC模拟的测量提供了可靠的百分比深度剂量数据.
这些发现证实了这种X射线装置适用于低kV的X射线放射治疗的适用性.

关键词:

蒙特卡洛模拟的蒙特卡洛模拟.电离室的电离室低kV辐射疗法低kV辐射疗法百分比的剂量深度剂量.

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