[18]用于放射治疗目标划分的F-甲基-l-氨酸正电子发射断层扫描:来自辐射瘤学认证计划的结果
Nathaniel Barry1,2, Eng-Siew Koh3, Martin A Ebert1,4,5,2
1School of Physics, Mathematics and Computing, University of Western Australia, Crawley, WA, Australia.
Physics and imaging in radiation oncology
|April 8, 2024
概括
放射性瘤学认证计划成功培训了19名放射性瘤学家,为质母细胞瘤管理确定混合目标体积 (TVMR+FET). 这增强了国家在使用[18]F-甲基-l-氨酸 (FET) PET成像用于改善瘤向方面的专业知识.
科学领域:
- 神经瘤学神经瘤学
- 辐射瘤学 辐射瘤学
- 医疗成像医学成像
背景情况:
- 在质母细胞瘤 (FIG) 中的[18]F-乙-l-氨酸 (FET) PET研究评估了新诊断的质母细胞瘤的FET PET.
- 一个放射性瘤学认证计划评估了推导标准护理目标体积 (TVMR) 和混合目标体积 (TVMR+FET) 结合FET PET生物瘤体积 (BTV) 的可行性.
研究的目的:
- 评估辐射瘤学家 (RO) 推导标准护理目标体积 (TVMR) 和混合目标体积 (TVMR+FET) 进行质母细胞瘤管理的可行性.
- 评估使用MRI单独对MRI与FET PET信息进行瘤体积划分的一致性和准确性.
主要方法:
- 在三个基准测试案例中,对目标量 (TVMR和TVMR+FET) 的中央审查.
- 使用子相似系数 (DSC),贾卡德指数 (JAC),重叠体积 (OV),豪斯多夫距离 (HD) 和平均绝对表面距离 (MASD) 评估RO轮协议.
- 评估每个参与站点的剂量计划生成.
主要成果:
- 在10个站点的19个RO获得了认证,最初的合格率为77.8% (所有重新提交均通过).
- 混合目标体积 (TVMR+FET) 比标准体积 (TVMR) 大得多 (p < 0.001).
- 与GTVMR (ICC = 0.910) 相比,总瘤体积 (GTV) 协议对于GTVMR+FET (ICC = 0.965) 是良好至优异的,GTVMR的空间重叠和边界协议更大.
结论:
- 凭证计划证明了可行性,成功地在10个地点授予了19个RO的凭证.
- 这一举措增加了国家专业知识,以界定用于质母细胞瘤治疗的混合目标体积 (TVMR+FET).
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