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在患者数据中评估正电子发射器分布的分析预测算法,用于对碳离子治疗的PET监测:模拟研究

Valentina Vasic¹, Katia Parodi², Marco Pinto²

¹Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität München (LMU Munich), Garching b. München, Germany; Department of Physics, University of Trento, Trento, Italy.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

|September 3, 2024

概括

一种分析方法准确地预测了正电子发射体配置文件,用于验证碳离子疗法范围. 这种方法避免了漫长的模拟,改善了临床工作流程中的治疗监测和质量保证.

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
核医学就是核医学.

背景情况:

在体内治疗监测对于离子治疗的质量保证至关重要.
范围验证是监测离子疗法治疗的关键挑战.
定子发射断层扫描 (PET) 被广泛用于碳离子治疗中的范围验证,依赖于来自核相互作用的β+活性.

研究的目的:

研究碳离子疗法中对正电子发射体配置的分析预测模型.
评估模型在不同复杂度的患者解剖学中的准确性,包括带有空气腔的异质病例.
突出模型的潜力和在范围验证方面需要改进的领域.

主要方法:

使用扩展过方法,从深度剂量分布分析预测正子发射体配置.
分析模型应用于患者解剖学,包括大脑和头部病例.
与蒙特卡洛模拟进行了比较,以评估准确性.

主要成果:

分析方法的平均相对误差为大约3%的范围验证.
在分析的患者病例中,模拟和预测之间的偏差低于2mm.
该研究确定了患者数据中分析方法适用的区域.

结论:

分析预测模型为耗时的蒙特卡洛模拟提供了可行的替代方案,用于碳离子疗法中范围验证.
这种方法可以尽量减少PET监控对临床工作流程的负担.
需要进一步改进,特别是对于高度异质的患者解剖学.

关键词:

碳离子疗法是一种碳离子疗法.过方法是一种过方法.监控PET监控PET的情况

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