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使用脑MRI中脉冲波幅度估计脑血流量

Julian Glandorf¹, Filip Klimeš¹, Agilo Luitger Kern¹

¹Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany; Biomedical Research in End-stage and Obstructive Lung Disease Hannover (BREATH), Member of the German Centre for Lung Research (DZL), Hannover, Germany.

Academic radiology

|April 25, 2024

概括

与流动相关的增强 (免费) MRI 与伪连续动脉旋转标记 (pCASL-MRI) 相比,提供大致近似的大脑血流 (CBF). 免费MRI显示了更快的大脑成像的潜力,类似于超声波多普勒.

科学领域:

神经成像是一种神经成像.
医学物理医学物理

背景情况:

大脑血流 (CBF) 是大脑健康的关键指标.
准确和高效的CBF测量技术对于临床诊断和研究至关重要.
目前的方法,如伪连续动脉旋转标签 (pCASL-MRI) 的速度有局限性.

研究的目的:

评估使用流量相关增强 (免费) 脑MRI估计CBF的可行性.
为了比较FREE-MRI CBF估计与pCASL-MRI的准确性.
评估加速FREE-MRI获取的潜力.

主要方法:

24名健康参与者接受了脑磁共振成像.
输液成像使用FREE-MRI和pCASL-MRI序列进行.
来自FREE-MRI的数据被追溯分析以评估加速潜力.

主要成果:

使用FREE-MRI的CBF估计显示了在较低范围 (0-20毫升/100克/分钟) 中与pCASL-MRI的高度重叠.
在较高的CBF值下观察到差异,FREE-MRI显示更多的高值 (>60毫升/100克/分钟).
免费MRICBF近似值保持稳定,数据减少高达50%,表明加速潜力.

结论:

与pCASL-MRI相比,FREE-MRI提供了一个可行的,尽管近似的CBF估计方法.
序列优化是必要的,以提高低 perfusion 组织的测量准确性.
免费MRI对加速脑 perfusion 成像具有显著的前景.

关键词:

在CBF的CBF中.与流量相关的增强图像速度优化成像速度优化这是PCASL的PCASL.perfusion 输液是一种输液.量化量化量化量化

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