短期和长期MRI评估了重血管化后儿科莫亚莫亚患者的血液动力学变化
Moss Y Zhao1, Elizabeth Tong1, Rui Duarte Armindo1,2
1Department of Radiology, Stanford University, Stanford, California, USA.
Journal of magnetic resonance imaging : JMRI
|July 29, 2023
概括
绕道手术改善了儿童Moyamoya患者的脑血流 (CBF) 和脑血管储备 (CVR). 这些血液动力学改善在重血管化后的短期和长期都可见.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 儿科医学 儿科医学
背景情况:
- 脑血管储备 (CVR) 表示大脑调整脑血流 (CBF) 的能力,对于评估中风风险至关重要.
- 降低CVR与大脑血管疾病 (如Moyamoya) 中的中风风险增加有关.
- 重血管化的对儿科莫亚莫亚患者血液动力学的影响需要进一步研究.
研究的目的:
- 评估莫亚莫亚病的儿科患者的绕道手术后的短期和长期血液动力学变化.
主要方法:
- 一项涉及46名儿童Moyamoya患者 (11个月-18岁) 的纵向研究.
- 动脉旋转标记 (ASL) MRI用于测量基线,1周和手术后6个月的CBF和动脉过渡时间 (ATT).
- 在乙醇胺诱导血管扩张后,CVR被计算为CBF的百分比变化.
主要成果:
- 在一周内 (41%) 和六个月后 (51%) 观察到ASL衍生的CBF显著增加.
- 六个月后,CVR显著增加了68%,ATT显著减少了6.6%.
- 血液动力学参数显示,在重血管化后,受影响的大脑区域显著改善.
结论:
- 绕道手术导致儿童Moyamoya患者血液动力学参数的短期和长期显著改善.
- 动脉旋转标签是评估这些血液动力学变化的宝贵的非侵入性工具.
- 这些发现表明,在这种儿科患者群体中,重血管化在管理大脑血管血液动力学方面是有效的.
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