内动脉狭窄: ipsilateral ACA中的血液动力学影响CT血管学表现
Chun Li1, Jihong Meng2, Baoxin Xu2
1Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China.
Frontiers in neuroscience
|June 5, 2023
概括
在前脑动脉A1段的CT血管学 (CTA) 发现与内动脉狭窄症 (ICAS) 严重程度相关. CTA和跨骨多普勒 (TCD) 可以帮助评估ICAS的程度和位置.
科学领域:
- 神经成像是一种神经成像.
- 脑血管疾病 脑血管疾病
- 血液动力学 血液动力学
背景情况:
- 内动脉狭窄 (ICAS) 构成中风的重大风险.
- 了解ICAS的内血动力学后果对于患者管理至关重要.
- 前脑动脉的A1段 (A1) 是一个关键的内血管,可能受到ICAS的影响.
研究的目的:
- 调查ICAS患者中A1段CT血管图 (CTA) 表现和脑血动力学之间的关系.
- 确定A1 CTA发现是否可以作为ICAS严重程度和内血动力学变化的指标.
主要方法:
- 用CTA分析了97名ICAS患者的队列,以评估A1段形态和对称性.
- 跨骨多普勒 (TCD) 被用于测量血液动力学指数,包括Vm (平均流速).
- 对A1 CTA发现和TCD衍生的血液动力学进行了比较分析,分别对狭窄侧和 contralateral 侧进行了分析,并按狭窄的严重程度分层.
主要成果:
- 狭窄侧和对侧侧之间A1 Vm的差异与ICAS的程度有显著的相关性.
- 严重的单边ICAS (≥70%) 与狭窄侧的苗条或非可视化的A1段相关.
- 狭窄侧的细细或非可视化的A1段与相反侧相比显著较慢的A1Vm有关 (P < 0.001).
结论:
- A1段的CTA表现反映了ICAS的次要的整体内血动力学变化.
- 对A1段的CTA和TCD综合评估可以帮助确定ICAS的位置和严重程度.
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