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圆束计算机断层扫描图像指导在磁共振成像中 - 仅规划工作流程
Laura M O'Connor1,2, Alesha Quinn1, Samuel Denley1
1Department of Radiation Oncology, Calvary Mater Hospital, Edith Street, Waratah, Newcastle, NSW 2298, Australia.
Physics and imaging in radiation oncology
|September 18, 2023
概括
专注的培训使磁共振成像 (MRI) 能够在临床工作流程中成功实现形光束计算机断层扫描 (CBCT) 图像指导,实现2mm和1度内的观察者间中位变化.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 放射治疗规划 放射治疗规划
背景情况:
- 只有磁共振成像 (MRI) 的工作流提供图像指导挑战.
- 制定有效的图像指导策略对于MRI治疗计划至关重要.
研究的目的:
- 评估MRI对Cone Beam Computed Tomography (CBCT) 图像指导在MRI-only规划工作流程中的可行性.
- 评估专注培训对放射治疗师进行MRI-CBCT匹配的能力的影响.
主要方法:
- 研发了一套培训方案,并向十名放射治疗师进行了管理.
- 在四个解剖区域 (前列腺黄金种子,前列腺软组织,直肠/门运河,妇科) 进行了图像匹配,使用CBCT数据与CT和MRI进行了比较.
- 对于每个地区,记录了观察者之间的匹配变化.
主要成果:
- 在所有地区,MRI-CBCT和CT-CBCT匹配的观察者间中位变化在2毫米和1度之间.
- 除了特定地区外,放射治疗师的经验水平 (临床图像指导或MRI) 和观察者之间的变化之间没有发现显著的关联.
- 根据MRI经验,前列腺黄金种子和直肠匹配区域的观察者间变异有显著差异.
结论:
- 该研究支持在临床环境中成功实施MRI到CBCT图像指导.
- 专注的培训是实现可靠的图像指导的关键因素,用于MRI-only放射治疗计划.
- 这种方法提高了仅MRI工作流程的可行性,以提高治疗准确度.
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