在 Carotid 动脉支架后的扩散权重成像中的缺血性病变:与接入路线的相关性
Cerebrovascular diseases extra
|December 1, 2025
概括
动脉支架 (CAS) 后的缺血性并发症与通道问题有关,特别是大动脉斑块和化. 计算机断层扫描血管造影 (CTA) 可以帮助预测这些风险.
科学领域:
- 血管外科 血管外科
- 干预心脏病学 干预心脏病学
- 放射学 放射学是一门学科.
背景情况:
- 尽管动脉支架 (CAS) 的进展,但缺血性并发症仍然存在.
- 焦点正在从斑块特征转移到进入路线作为潜在的风险因素.
- 计算机断层扫描血管造影 (CTA) 提供了一种评估通道和斑块不稳定的方法.
研究的目的:
- 确定导致CAS后缺血性并发症的因素.
- 评估通道的作用,包括大动脉斑块和近端细分损伤.
- 确定CTA在识别患有后CAS缺血事件风险的患者中的预测价值.
主要方法:
- 对115名接受CAS和术前CTA的患者进行了回顾性分析.
- 对大动脉斑块 (按化分类) 和近端段狭窄的通道的评估.
- CTA发现与术后扩散加权成像 (DWI) 病变 (侧,非侧,双侧) 的相关性.
主要成果:
- 在CAS后42.6%的患者中检测到缺血性病变.
- 靠近部位的病变与ipsilateral缺血事件显著相关 (OR,4.30-4.40).
- 大动脉斑块和化与非双侧和双侧缺血事件 (ORs从5.33到18.51) 有着强烈的关联.
结论:
- 接入路径特征,特别是大动脉斑块和化,是CAS后缺血并发症的重要预测因素.
- CTA是评估通道和预测缺血病变的宝贵工具.
- 了解这些因素可以帮助优化患者选择和CAS的程序规划.
更多相关视频
10:25Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping
Published on: September 25, 2019
49.2K
09:36A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis
Published on: August 12, 2025
518
相关概念视频
Ischemic Stroke l: Introduction
53
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
53
Ischemic Stroke ll: Pathophysiology
68
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
68
Transient Ischemic Attack l: Introduction
34
A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
34
