MR angiography and arterial spin labeling proton in assessing correlation between transient ischemic attack and intracranial artery perfusion abnormalities

VernacularTitle:MR血管成像与动脉质子自旋标记探讨脑血流异常与短暂性脑缺血发作的关系
Author: Liya ZHANG ; Zhixiang GAO ; Xufeng ZHOU ; Chao LU ; Xien BAI ; Xiaoping LIU
Publication Type:Journal Article
Keywords: Ischemic attack; transient; Magnetic resonance angiography; Perfusion imaging
From: Chinese Journal of Medical Imaging Technology 2009;25(12):2190-2192
CountryChina
Language:Chinese
Abstract: Objective To assess the value of magnetic resonance angiography (MRA) and arterial proton spin labeling (ASL) in the internal carotid artery transient ischemic attack. Methods According to TIA seizure frequency, 58 patients clinical diagnosed as TIA were divided into single group (n=12) and the frequent group (n=46). All patients underwent MRA and ASL, then intracranial arterial stenosis and cerebral perfusion were evaluated. Results Vascular stenosis with abnormal ASL were detected in 33 (71.74%) of 46 frequent TIA patients and 1 (8.33%) single TIA patient. The incidence of vascular stenosis with abnormal ASL was higher in frequent TIA than that in single TIA (P＜0.05). Conclusion Vascular stenosis with perfusion abnormality is one of the most risk factors of TIA frequent seizures. Combination of MRA and ASL can make judgment for stenosis and abnormality of cerebral blood flow, being helpful to understand the onset causes and prognosis of TIA.