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阿尔茨海默氏症成像联盟

David C Zhu1, Josh Hubert2, Norman Scheel2

  • 1Albert Einstein College of Medicine, Bronx, NY, USA.

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概括
此摘要是机器生成的。

在老年人中,较高的血脉压与增加的动脉血流脉动性相关. 相反,心率升高与大脑组织脉动性降低有关,影响大脑血液流动.

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科学领域:

  • 心血管生理学心血管生理学
  • 神经成像是一种神经成像.
  • 生物医学工程 生物医学工程

背景情况:

  • 该HIPAC试验调查了老年人血压,心率和内脉动性之间的关系.
  • 了解这些动态对于评估老年人群中脑血管健康至关重要.

研究的目的:

  • 为了检查血压指标 (脉压) 和动脉血流脉动性之间的相关性.
  • 为了研究心率与大脑组织脉动性之间的关系.
  • 探索每次心脏循环 (CBV-C) 脑血量与脑组织脉动性之间的联系.

主要方法:

  • 在85名老年人 (65 ± 6岁) 上使用2D CINE相对照 (PC) MRI测量大脑血流和组织脉动性.
  • 在内动脉 (ICAs) 中量化动脉血流脉动性和全球脑组织脉动性.
  • 收集了24小时的门诊血压和心率数据.

主要成果:

  • 在脉压和ICA血流脉动性之间观察到正相关性 (R = 0.4140.466).
  • 在心率和全球脑组织脉动性之间发现了显著的负相关性 (R = -0.452-0.830).
  • 心率与CBV-C负相关 (R = -0.577),而CBV-C与大脑组织脉动性正相关 (R = 0.562).

结论:

  • 在老年人中,血脉脉压与动脉血流脉动性有关.
  • 心率在这个人口群体中显示出与大脑组织脉动性有负相关性.
  • 这些发现突显了心血管参数和大脑血管脉动性在衰老中的相互作用.