中华医学杂志
2021年 · 第101卷第23期
中华医学杂志
中国脑死亡判定现状与推进
中华医学会肿瘤学分会肺癌临床诊疗指南(2021版)
《脑死亡判定标准与操作规范:专家补充意见(2021)》
《脑死亡判定实施与管理:专家指导意见(2021)》
基于生成对抗网络提高动脉自旋标记图像质量及量化精度分析
动脉自旋标记脑灌注减低与双侧烟雾血管病变脑血管事件发生的相关性分析
基于多延迟动脉自旋标记对单侧大脑中动脉重度狭窄/闭塞患者软脑膜支及深穿支脑灌注改变分析
动脉自旋标记联合时间飞跃法磁共振血管造影对脑动静脉分流的诊断价值
基于血流动力学颈内动脉不同侧别动脉瘤破裂的相关因素分析
孕期睡眠时点与小于胎龄儿发生风险的关系
可溶性血栓调节蛋白对评估肾脏病患者内皮损伤状态的价值
颈椎人工间盘置换术十年随访及适应证选择研究
第540例 突眼—多发淋巴结肿大—乳腺肿物
动脉自旋标记成像技术在脑灌注、侧支循环评价中的应用进展
颈动脉狭窄的动脉自旋标记研究:动脉通过伪影可预测脑缺血症状
Internal carotid artery stenosis has a higher risk of stroke. At present, many studies have focused on plaque vulnerability: plaque structure and composition, but few studies have analyzed intracerebral hemodynamic changes as a risk factor for stroke in patients with internal carotid artery stenosis. The study used magnetic resonance contrast-enhanced angiography, carotid plaque imaging, and arterial spin labeling (ASL) to distinguish between asymptomatic and symptomatic patients with carotid stenosis. The enrolled patients with carotid stenosis were derived from two prospective studies (ECST-2, SHIP) in which ASL and carotid plaque imaging were acquired on the same 3T magnetic resonance imaging (MRI) between 2014 and 2018. Enrolled patients were divided into symptomatic and asymptomatic groups according to clinical assessment of recent transient ischemic attack or stroke. Without the knowledge of clinical symptoms, the degree of stenosis of carotid plaque, plaque surface structure and intraplaque hemorrhage (IPH), collateral branches of Willis ring, and the presence and severity of superior arterial passage artifacts (ATAs) in ASL images were analyzed. A total of 44 patients were enrolled in the study. Sixteen of the 28 patients with more than 70% carotid stenosis were shown to have ATAs, and ATAs was associated with absence of the anterior communicating artery. There was no significant correlation between cerebral ischemic symptoms and the degree of stenosis, IPH and plaque surface structure. Patients with ATAs are more likely to develop symptoms than those without ATAs. Cerebral ischemic symptoms were also associated with ATAs severity. Therefore, it is concluded that ATAs is the only factor associated with ischemic symptoms in patients with recent carotid stenosis, and the degree of carotid stenosis, plaque ulcers and IPH are not associated with cerebral ischemic symptoms.
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