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在记忆诊所队列中,早期粉样蛋白-PET和脉动动脉旋标签之间的协议

F Ribaldi^1,2, A J Mendes^3,4, I Boscolo Galazzo⁵

¹Geneva Memory Center, Department of Rehabilitation and Geriatrics, Geneva University Hospitals, Geneva, Switzerland. addressfederica.ribaldi@unige.ch.

Journal of molecular medicine (Berlin, Germany)

|May 20, 2025

概括

脉冲动脉旋标记MRI (pASL) 和早期粉样蛋白-PET (ePET) 均评估大脑输液. 虽然pASL表现出微弱到中度的相关性,但pASL显示出比ePET更多的认知阶段之间的区域差异.

科学领域:

神经成像是一种神经成像.
脑血管生理学脑血管生理学
核医学是一种核医学.

背景情况:

脉冲动脉旋标记 (pASL) MRI测量相对脑血流量 (rCBF). 脉冲动脉旋标记 (pASL) MRI测量相对脑血流量 (rCBF). 脉冲动脉旋标记 (pASL) MRI测量相对脑血流量 (rCBF). 脉冲动脉旋标记 (pASL) MRI测量相对脑血流量 (rCBF).
早期粉样蛋白-PET (ePET) 量化标准化吸收值比率 (SUVr).
rCBF和SUVr都作为 perfusion 代理服务,有可能简化诊断.

研究的目的:

为了比较来自pASL (rCBF) 和ePET (SUVr) 的输液样数据.
在记忆诊所队列中评估这些技术之间的关联和区域差异.
评估他们检测认知障碍相关 perfusion 变化的能力.

主要方法:

追溯分析46名记忆诊所患者 (29名认知障碍患者,17名无障碍患者).
对18个大脑区域的区域rCBF (pASL) 和SUVr (ePET) 值进行比较.
线性回归和主体内变化系数 (wsCV) 用于关联分析.

主要成果:

在 precuneus,角性环和海马体中发现了rCBF和SUVr之间较弱至中度的关联.
在多个皮质区域观察到认知无损和认知受损组之间的显著rCBF差异.
SUVr仅在海马体中显示出显著的差异,而rCBF显示出更广泛的区域变化.

结论:

pASL和ePET显示弱至中度的区域相关性作为脑 perfusion 代理.
通过pASL测量的rCBF在认知阶段之间表现出更明显的区域差异,与SUVr从ePET相比.
这两种技术都能识别出与认知障碍相关的 perfusion-like 变化.

关键词:

动脉旋转标签的标记大脑的血液流动.早期阶段的PET是一种PET.perfusion 输液是一种输液.

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