使用混合血管造影-CT与解剖细分相比,在分段Y90治疗规划中的辐射剂量计的体积计算的定量差异
Daniel H Kwak1, Alex Lionberg1, Mikin Patel1
1Department of Radiology, Section of Interventional Radiology, The University of Chicago Medical Center, Chicago, IL 60637, United States.
The British journal of radiology
|February 2, 2024
概括
混合血管CT成像提供更准确的治疗体积和个性化剂量测量用于跨动脉放射栓塞 (TARE) 与科诺的解剖模型相比. 这种方法改善了肝脏瘤的辐射规划.
科学领域:
- 干预性放射学 干预性放射学
- 医疗成像医学成像
- 辐射瘤学 辐射瘤学
背景情况:
- 跨动脉放射栓塞 (TARE) 是肝脏瘤的常见治疗方法.
- 精确划分处理量对于有效的Y-90辐射剂量测量至关重要.
- 使用科诺解剖模型的传统方法可能无法完全捕捉瘤解剖学.
研究的目的:
- 为了比较由混合血管CT成像与Couinaud解剖模型获得的治疗量.
- 评估这些体积差异对TARE中Y-90辐射剂量计的影响.
- 评估Angio-CT用于TARE规划的准确性和个性化潜力.
主要方法:
- 对44名用Y-90玻璃微球接受TARE治疗的患者进行了回顾性分析.
- 使用来自Angio-CT和Couinaud标志的瘤血管体划定治疗量.
- 用于体积计算的半自动软件;统计测试比较差异.
主要成果:
- 血管CT体积测量结果显示,与库诺模型 (316毫升) 相比,细分体积 (404毫升) 显著增加.
- 治疗剂量有显著差异,Angio-CT产生的平均剂量比Couinaud模型 (253 Gy) 低 (212 Gy).
- 库诺模型低估了流域瘤的体积,高估了带有中心亡或超选择的外围瘤的大型瘤.
结论:
- 混合血管CT成像提供了比TARE的Couinaud解剖模型更准确的治疗体积划分.
- 这种改进的准确性使得Y-90辐射剂量测量更加个性化,并可能更有效.
- 与传统成像相比,血管CT在选择性内部辐射治疗规划方面具有优势.
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