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使用基于接的探测器技术和智能重建算法获取质子束信息

Chi-Wen Hsieh¹, Hong-Liang Chang², Yi-Hsiang Huang¹

¹Department of Electrical Engineering , National Chung Cheng University, Chiayi 621301, Taiwan.

Sensors (Basel, Switzerland)

|August 28, 2025

概括

本研究介绍了基于接的探测器 (SBD) 和用于在放射治疗中重建粒子束数据的算法. 该方法准确地测量了光束强度,西格玛和位置,确保了像质子束疗法 (PBT) 这样的治疗质量保证.

科学领域:

医学物理
放射治疗技术
粒子束分析

背景情况:

放射治疗的质量保证对于患者的安全性和治疗效果至关重要.
精确的粒子束特征对于精确的剂量传递至关重要.
现有方法可能在实时监测和重建方面存在局限性.

研究的目的:

提出一种基于接的新型探测器 (SBD) 技术,用于粒子束重建.
开发智能算法来确定光束强度,西格玛值和位置.
在放射治疗应用中验证SBD技术和算法的有效性.

主要方法:

使用基于接的探测器 (SBD) 具有128x128的电离室.
使用智能算法重建投射的粒子束信息.
使用笔束扫描 (PBS) 质子束疗法 (PBT) 模拟验证了该技术.
分析了各种西格玛值和强度定义的性能.

主要成果:

在模拟中,SBD技术和算法表现出令人满意和实用的性能.
在光束参数重建中达到3.95%的最大误差率.
发现错误主要发生在对称和外围边界.
由于传感器的不精确性,观察到较低的西格玛值会增加错误率.

结论:

拟议的SBD技术和智能算法为放射治疗中的粒子束质量保证提供了可行的解决方案.
这种方法很强大,即使在具有挑战性的条件下也具有实际错误率.
该技术广泛适用于放射治疗中的高斯分布粒子束.

关键词:

电离室笔光束扫描质子束重建质子束疗法质量保证辐射治疗基于接的探测器

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