记忆管节省使用扩散张力成像在辐射规划的初级脑瘤的扩散张力成像
Ory Haisraely1, Arnaldo Mayer2, Marcia Jaffe3
1Department of Advanced Technologies, Sheba Medical Center, Tel Aviv University, Tel Aviv-Yafo, Israel; Department of Radiation Oncology, Physics Unit, Tel Aviv-Yafo, Israel.
Practical radiation oncology
|October 2, 2024
概括
放射治疗可能导致认知能力下降. 节省海马和记忆纤维的新技术在脑瘤患者的认知功能保存方面显示出有希望的结果.
科学领域:
- 神经瘤学神经瘤学
- 辐射瘤学 辐射瘤学
- 认知神经科学 认知神经科学
背景情况:
- 放射治疗对脑瘤至关重要,但可能导致认知能力下降,特别是影响海马体.
- 避开海马的全脑RT与美曼丁显示了保证在大脑转移患者保持认知的承诺.
研究的目的:
- 评估基于扩散张力成像 (DTI) 的内存纤维通道储存集成到原发性脑瘤的RT计划中的安全性和剂量测量可行性.
- 评估这项技术在维护认知功能方面的潜力.
主要方法:
- 一项前性试验包括了接受RT的原发性脑瘤患者.
- DTI用于绘制记忆白质道的地图,这些地图在治疗计划软件中与海马体进行了轮.
- 卷度调制弧线疗法 (VMAT) 计划包含了内存纤维剂量限制.
主要成果:
- 在12名低度质瘤患者中,记忆纤维和海马的轮成功.
- VMAT计划实现了对记忆纤维的剂量限制 (平均平均剂量为10.1 Gy).
- 认知评估得分 (蒙特利尔认知评估) 显示了治疗后保存的趋势 (平均变化 -0.7,P=0.07).
结论:
- 使用VMAT进行DTI指导的RT规划可以节省海马体和相关的白质道.
- 这种方法显示了在脑瘤患者中保持认知功能的潜力.
- 需要在更大的队列中进一步验证.
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