边缘型高强度内动脉斑块:一种潜在的MRI中风复发生物标志物
Hongxia Li1, Sui Chen2, Jia Liu2
1Department of Medical Imaging, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, Jiangsu, China.
Journal of magnetic resonance imaging : JMRI
|January 20, 2024
概括
边缘型T1高强度斑块 (HIP) 与症状内动脉缩狭窄症患者中中风复发风险增加有关. 识别这些斑块可能会改善中风预防策略.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 心血管研究研究心血管研究
背景情况:
- 识别高风险中风复发的患者对于有效的中风预防和治疗策略至关重要.
- 症状性内动脉硬性狭窄症 (sICAS) 是缺血性中风的重要原因,需要准确的风险分层.
- 在MRI上T1高强度斑块 (HIP) 可能代表脆弱的动脉样硬化病变,但它们的预后意义需要进一步阐明.
研究的目的:
- 为了研究T1高强度斑块 (HIP) 的成像特征,在有症状的内动脉缩狭窄症 (sICAS) 的患者中.
- 确定不同类型的HIP与此患者队列中中风复发风险之间的关系.
主要方法:
- 对157名中度至重度 (≥50%) 非闭包性SICAS患者的回顾性分析,这些患者接受了3.0TMRI,使用3D高分辨率黑血T1加权序列.
- 板块被分为HIP或非HIP,HIP进一步根据信号强度模式分为边缘类型和非边缘类型.
- 包括卡普兰-梅尔曲线和考克斯回归在内的统计分析被用来评估在27个月的中位数随访期间,斑块特征和中风复发之间的关联.
主要成果:
- 在157种病变中,87% (55%) 是HIP,其中43种是边缘型和44种非边缘型. HIPs比非HIPs更大,更厚.
- 边缘型HIP在后部循环中更为普遍,并且与非边缘型HIP相比,表现出更大的厚度,体积,斑块负担和重塑.
- 边缘型HIP在糖尿病和脂质失调患者中更为常见. 脑卒中复发与边缘型HIP (aHR=2.83) 有显著的关联,特别是在60岁以上的患者中.
结论:
- T1高强度斑块可以分为边缘型和非边缘型,每个都有不同的成像特征.
- 边缘型HIP成为预测症状内动脉缩症患者中风复发的潜在MRI生物标志物.
- 这些发现可能有助于完善风险分层,并指导高风险复发性中风患者的预防性治疗.
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