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神经认知和休息状态功能磁共振成像在化学辐射治疗后扩散质瘤患者的变化
Zhihua Liu1, Timothy J Mitchell1, Chongliang Luo2
1Department of Radiation Oncology, Washington University School of Medicine, St Louis, Missouri.
概括
休息状态fMRI (rs-fMRI) 揭示了与神经认知功能 (NCF) 衰退相关的大脑网络变化,这是在质瘤放射治疗 (RT) 后发生的. 这些rs-fMRI变化显示出作为预测RT后NCF变化的生物标志物具有前途.
科学领域:
- 神经成像是一种神经成像.
- 在瘤学瘤学.
- 神经学 神经学
背景情况:
- 质瘤的放射治疗 (RT) 可以影响神经认知功能 (NCF).
- 了解在RT后NCF变化背后的神经机制对于患者管理至关重要.
- 休息状态功能磁共振成像 (rs-fMRI) 提供了一种非侵入性方法来评估大脑网络的完整性.
研究的目的:
- 为了研究使用rs-fMRI在部分大脑RT后质瘤患者的网络水平干扰.
- 为了将rs-fMRI发现与神经认知功能 (NCF) 的变化相关联.
- 为了确定在RT后NCF下降的潜在成像生物标志物.
主要方法:
- 一项前性观察性研究,涉及成年质瘤患者接受RT.
- rs-fMRI和神经认知测试 (NCF) 在基线和RT后6个月进行.
- 基于种子的功能连接 (FC) 分析和回归模型被用来将FC变化与NCF变化联系起来.
主要成果:
- 38%的患者在RT后经历了神经认知功能 (NCF) 的下降.
- 功能连接性 (FC) 变化解释了NCF变化偏差的中等部分 (R2 ≈ 0.30).
- 周围记忆网络 (PMN) 中的内部网络FC和PMN和视觉网络之间的互联网FC是NCF变化的重要预测因素.
结论:
- rs-fMRI检测到与神经认知衰退相关的显著网络变化,在质瘤患者的RT后.
- rs-fMRI显示了作为一个敏感的成像生物标志物的潜力,用于预测放射治疗后的神经认知结果.
- 这些发现支持使用rs-fMRI来监测和潜在地减轻RT诱导的神经认知缺陷.
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