Correlation between the abnormalities in diffusion-weighted MRI and the clinical factors in patients with transient ischemis of brain
- VernacularTitle:短暂性脑缺血发作的磁共振弥散加权成像表现与临床因素的关系
- Author:
Zhihong WANG
;
Huaijun LIU
;
Boyuan HUANG
- Publication Type:Journal Article
- Keywords:
ischemic attack,transient;
magnetic resonance imaging;
diffusion-weighted imaging
- From:
Medical Journal of Chinese People's Liberation Army
1982;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the utility of diffusion-weighted MRI(DWI)and the correlation between the abnormalities in DWI and the clinical factors in patients with transient ischemic attack of the brain(TIA).Method Clinical,conventional MRI,and DWI data were collected on 59 consecutive patients with TIA between March and July 2006 within 7 days of the onset of TIA symptoms.The relationship between DWI-detected findings and patients' clinical manifestations was then analyzed.Results DWI-detected abnormalities were displayed in 22 of 59 cases(37%,positive group).Prolonged TIA duration(TIA duration≥30 minutes),repeated episodes,motor deficits,aphasia,history of either stroke or TIA,diabetes mellitus,and atrial fibrillation were observed more frequently in the positive group than in the negative group.In 9 of 22 cases,the identified lesions were not detected by conventional MRI(T2-weighted imaging or fluid-attenuated inversion recovery).In other 13 cases,abnormalities were present on both DWI and conventional MRI.Conclusions In TIA patients,prolonged TIA duration(TIA duration≥30 minutes),repeated episodes,motor deficits,aphasia,history of either stroke or TIA,diabetes mellitus,and atrial fibrillation were significantly correlated with detectable abnormalities on DWI.
