皮亚尔附带物限制了脑卒中进展和代谢应激在hypoperfused组织:一个MRI输液和mq-BOLD研究研究
Franziska Frank1, Stephan Kaczmarz2, Christine Preibisch2,3
1Department of Neurology, University Hospital Frankfurt (Goethe University), Frankfurt, Germany.
概括
在急性缺血性中风 (AIS) 中,不良的附带血液供应和高氧提取分数 (OEF) 表明严重的组织损伤. 这项MRI研究将降低的附带效应和增加的OEF与大型心脏病发作和大血管封闭 (LVO) 患者的更差的临床结果联系起来.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 心血管医学 心血管医学
背景情况:
- 在急性缺血性中风 (AIS) 中的大血管封闭 (LVO) 在理解组织活力方面存在挑战.
- 勒普托门关节附带供应和脑氧提取分数 (OEF) - - 缺血半阴影的标志物 - - 之间的相互作用仍然不清楚.
研究的目的:
- 在LVO的AIS患者中,研究医疗担保和组织氧气提取之间的关系.
- 使用磁共振成像 (MRI) 来评估附带供应和OEF.
主要方法:
- 分析了14名前部循环LVO.患者的MRI数据.
- 包括扩散权重成像,输液权重成像 (PWI) 和多参数定量血氧水平依赖成像用于相对OEF (rOEF) 计算.
- 使用T2*权重的PWI时间序列中的信号方差,量化评估PWI抵押品供应.
主要成果:
- 证券供应量化与基线缺血性核心体积和低透区域的rOEF之间发现了负相关性 (p < .01).
- 减少的抵押品供应和增加的rOEF显著与国家卫生研究院中风量表得分较高相关 (p < .05).
- 低透组织中增加的ROEF与更大的基线 (p = .043) 和随访心脏病发作体积 (p = .009) 相相关.
结论:
- 基于PWI的担保映射有效地可视化了健康的担保供应,反映了组织病理生理学和临床/成像结果.
- 磁共振衍生rOEF绘制突出显示了hypoperfused组织中的半暗特征.
- 大脑rOEF可以在AIS中作为一个有价值的成像生物标志物.
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