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优化皮肤替代品的选择,用于使用四维计算机断层扫描对肺病变的表面导向立体体辐射治疗
Vanda Leipold1,2, Ivana Alerić2, Mihaela Mlinarić2
1Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia.
Cancers
|July 13, 2024
概括
用于放射治疗的表面指导使用皮肤替代品追踪肺部运动. 皮肤运动因区域和身体组成而异,影响肺损伤跟踪的准确性.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 辐射疗法 辐射疗法
背景情况:
- 图像指导放射治疗 (IGRT) 使用表面指导来跟踪下肺病变的呼吸运动,减少辐射暴露.
- 了解皮肤呼吸运动的大小及其与不同皮肤感兴趣区域 (ROI) 的肺损伤运动的相关性至关重要,但往往不清楚.
研究的目的:
- 分析9个皮肤ROI的呼吸运动大小及其与下肺叶病变运动的相关性.
- 研究性别和脂肪组织对这些运动参数的影响.
主要方法:
- 分析了来自57名患者的四维计算机断层扫描 (4DCT) 图像.
- 对9个皮肤ROI和一个肺跟踪结构 (TS) 的呼吸运动幅度的量化.
- 评估ROI和TS之间的相关性,考虑性别和脂肪组织分布.
主要成果:
- 在皮肤ROI之间发现了呼吸运动幅度和ROI与TS相关性的显著差异.
- 对于带有肋骨支的ROI,ROI运动量和脂肪组织之间的负相关性.
- 在上胸部ROI中,脂肪组织体积和ROI-TS相关性之间存在微弱至中度的负相关性.
- 与女性相比,男性在非肋骨支区域的呼吸运动幅度更大,ROI与TS相关性没有性别差异.
结论:
- 皮肤的ROI运动特征有很大差异,这影响了它们作为肺损伤运动的替代品的适用性.
- 脂肪组织和性别影响皮肤运动的大小和与肺部运动的相关性.
- 这些发现指导了在放射治疗中为下肺病变运动管理选择最佳皮肤替代品.
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