中间时网络,状记忆网络和视觉网络在化学辐射治疗后发生的情节性记忆衰退的剂量依赖关系,在患有扩散性结质瘤的患者中
Zhihua Liu1, Stephanie Zhao1, Timothy J Mitchell1
1Department of Radiation Oncology, Washington University School of Medicine, St Louis, MO, USA.
International journal of radiation oncology, biology, physics
|February 13, 2026
概括
对特定大脑网络的辐射剂量会影响结质瘤治疗后的情节性记忆. 休息状态fMRI可以确定在放射治疗期间保存认知功能的目标.
科学领域:
- 神经科学是一个神经科学.
- 辐射瘤学 辐射瘤学
- 认知科学 认知科学
背景情况:
- 评估放射治疗对扩散性质瘤患者神经认知功能 (NCF) 的影响至关重要.
- 了解辐射到大脑网络和NCF变化之间的剂量反应关系是优化治疗的关键.
研究的目的:
- 为了评估辐射剂量到静止状态网络 (RSN) 和NCF在成年扩散质瘤患者中RT后变化的辐射剂量之间的剂量反应关系.
- 确定与认知功能变化相关的特定RSN和辐射剂量.
主要方法:
- 一项前性观察性研究,涉及成年质瘤患者接受RT.
- 神经认知功能 (NCF) 测试使用NIH工具箱认知电池和休息状态功能性MRI (rs-fMRI) 在RT前后.
- 在RSN的辐射剂量参数和NCF变化 (ΔNCF) 之间的相关性分析.
主要成果:
- 在中位叶网络 (MTL),视觉网络 (VN) 和顶层记忆网络 (PMN) 的平均剂量和情节性记忆的变化 (ΔNCFEM) 之间发现了中等负相关性.
- 对于其他RSN或NCF域没有观察到显著的相关性.
- 一个包括MTL剂量和年龄相互作用的线性回归模型更好地解释了ΔNCFEM的差异.
结论:
- 在特定RSN的辐射剂量和RT后的情节性记忆衰退之间存在着焦点剂量-反应关系.
- 休息状态fMRI显示了在RT期间识别认知保存目标的预后和治疗潜力.
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