The Evaluation of Cranial and Cervical Arteries and the Brain in TIA Patients with MRA and DWI
- VernacularTitle:MRA及DWI评估TIA患者颅颈动脉及脑实质病变
- Author:
Jianlong LI
;
Tielian YU
;
Xiaoling WANG
;
Dong LI
- Publication Type:Journal Article
- Keywords:
brain;
transient ischemic attacks;
MR angiography;
diffusion weighted imaging
- From:
Journal of Practical Radiology
2001;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate magnetic resonance angiography(MRA) and diffusion weighted imaging(DWI) features of transient ischemic attacks(TIA).Methods 40 patients with TIA were chosen as study subjects,and 34 healthy adults and 36 cases with brain infarction were randomly chosen as control subjects.MRA and DWI was performed with a superconductive GE 1.5T system.The relationship between TIA and the degree and distribution of stenosis of cranial and cervical arteries,the development of the vessels,DWI findings of the brain was analyzed.Results There were significant differences among the three groups in the number and the degree of stenosis of cranial and cervical arteries(P=0.006).The stenosis and occlusion of arteries were severe in the patients with TIA and brain infarctions than that in healthy adults(P=0.004,0.015),but there were no significant differences between TIA and brain infarctions(P=0.148).The incidence of dysplasia of unilateral vertebral arteries(VA) in TIA was higher than that in the normal subjects(P=0.039).The internal carotid artery(ICA)system supplying to the regions of brain tended to show more ischemic focus on DWI(4/8,50%) in the cases with TIA.Conclusion Severe stenosis or occlusion and irregular filling defects of cervical and cranial arteries in patients with TIA might be one of the risk factors for severe ischemia stroke.The hypoplastic VA was one of predisposing factor for TIA.
