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在社区的老年人中,大脑的氧气提取和血液流动:与白质过强度和神经认知功能相关联

Yifan Yan^1,2,3,4, Xuhao Zhao^1,4, Yaping Zhang^1,4

¹Department of Psychiatry, School of Public Health, The 2nd Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310058, China.

Brain communications

|March 11, 2026

概括

大脑氧气提取分数 (OEF) 是老年人认知能力下降的敏感标志物,而大脑血流 (CBF) 则影响白质强度过高 (WMH) 负担. 这是一个很棒的节目,这是一个很棒的节目.

科学领域:

神经科学是一个神经科学.
放射学放射学是一门学科.
老年学是一门学科.

背景情况:

大脑氧气提取分数 (OEF) 和大脑血流 (CBF) 是关键的血液动力学标记.
新出现的证据表明,OEF,CBF,小血管疾病和老年人认知功能之间的复杂,潜在的非线性关系.

研究的目的:

调查OEF,CBF,白质超强度 (WMH) 负担和社区老年人的认知表现之间的关联.
探索潜在的非线性关系,并确定标志着认知脆弱性的特定OEF-CBF模式.

主要方法:

从中国遗产研究中对296名社区老年人的横截面研究.
使用T2-放松下脊柱标记 (TRUST) MRI测量OEF;使用相对比MRI测量CBF.
使用T2 FLAIR成像分割WMH卷;在多个领域评估认知功能并总结为全球复合Z-score.

主要成果:

较高的OEF与较低的全球认知相关,而较低的CBF与更大的WMH负担相关.
"痛苦输液"模式 (高OEF,低CBF) 显示了最高的WMH体积和最差的认知表现.
响应表面分析揭示了OEF和认知之间的U形关联,CBF影响WMH和认知结果.

结论:

OEF是老年人认知脆弱性的敏感指标,影响注意力,执行功能,视觉空间能力和记忆力.
CBF是WMH负担的主要决定因素.
结合的OEF-CBF模式,特别是"痛苦 perfusion",可以帮助分层社区居民的风险,并确定早期干预的目标.

关键词:

大脑的血液流动.大脑氧气提取分数的大脑氧气提取分数认知能力下降认知能力下降小血管疾病是小血管疾病.白质超强度是白质的超强度.

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