重新定义缺血核心,半阴影和目标不匹配在急性前端远端中等血管阻塞的输液成像上
Leon Y Cai1,2, Meisam Hoseinyazdi3, Dhairya A Lakhani4
1Department of Neurology Johns Hopkins University School of Medicine Baltimore MD.
Stroke (Hoboken, N.J.)
|January 29, 2026
概括
确定了在急性远端中血管封闭 (DMVOs) 中选择患者进行内血管血栓切除术 (EVT) 的新标准. 使用核心的相对脑血流 (rCBF) <38%和半阴影的最大时间 (Tmax) >8秒,改善了对EVT的患者选择.
科学领域:
- 神经学 神经学
- 干预性放射学 干预性放射学
- 医疗成像医学成像
背景情况:
- 对急性远端中血管封闭 (DMVOs) 的内血管血栓切除 (EVT) 试验产生了负面结果,可能是由于成像标准不一致.
- 成功的大血管封闭 (LVO) EVT试验使用基于 perfusion 成像的目标不匹配 (TMM) 标准.
研究的目的:
- 确定基于 perfusion 成像的最佳目标不匹配 (TMM) 标准,用于在急性前部 DMVOs 选择患者.
- 改进LVO EVT试验中用于DMVO应用的现有TMM定义.
主要方法:
- 从4个中风中心前性收集数据的回顾性分析.
- 对相对脑血流 (rCBF) 和时间至最大 (Tmax) 的各种值进行评估,以与心脏病发作体积相关联.
- 使用Tmax和rCBF评估TMM标准,以确定DMVO的最佳定义.
主要成果:
- 相对脑血流 (rCBF) <38%显示最强的相关性与心脏病核心体积 (一致性相关系数0.30).
- 时间到最大 (Tmax) >8秒显示出与缺血半阴影体积的最强相关性 (一致性相关系数为0.49).
- 优化的TMM标准 (Tmax>8秒,rCBF<38%) 与不匹配率≥2.2和体积≥10毫升显著改善了对EVT患者有利结局的识别.
结论:
- 相对脑血流 (rCBF) <38%和Tmax>8s是确定急性前部DMVOs中缺血核心和半阴影的最佳参数.
- 这些精细的TMM标准可以更好地量化DMVOs中患者对EVT的选择.
- 建议对这些标准进行前性调查,因为低于最佳的患者选择可能会混以前负面的DMVO EVT试验.
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