Susceptibility Weighted MR Imaging at 3T in Patients with Occlusion of Middle Cerebral Artery : Comparison with Diffusion Weighted Imaging Score (ASPECTS).
10.13104/jksmrm.2011.15.3.219
- Author:
Heejin SHIM
1
;
Hyun Seok CHOI
;
So Lyung JUNG
;
Kook Jin AHN
;
Bum soo KIM
Author Information
1. Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea. bumrad@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Susceptibility weighted imaging;
Diffusion weighted imaging;
Middle cerebral artery occlusion;
Stroke
- MeSH:
Diffusion;
Hemorrhage;
Humans;
Infarction;
Infarction, Middle Cerebral Artery;
Middle Cerebral Artery;
Retrospective Studies;
Stroke;
Veins
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2011;15(3):219-225
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To describe the imaging findings at susceptibility weighted imaging (SWI) at 3T in patients with occlusion of middle cerebral artery, and to correlate the absence or presence of arterial bright foci in sylvian fissure, as one of their finding at SWI, with the diffusion weighted imaging (DWI) scores. MATERIALS AND METHODS: We included 12 patients with symptomatic unilateral occlusion of middle cerebral artery. Retrospective review of SWI and DWI was done. On DWI, size of infarction was analyzed according to the ASPECTS grading system. On SWI, presence of hemorrhage, dark blooming of intravascular clot, distension of medullary or cortical vein, and absence or presence of bright arterial foci in sylvian fissure were evaluated. RESULTS: Of 12 patients with symptomatic unilateral MCA occlusion, SWI showed dark blooming of intravascular clot in 8 patients (66.7%), distended medullary or cortical vein in 7 patients (58.3%), nonvisualization of arterial bright signal intensity in sylvian fissure in 7 patients (58.3%), and hemorrhage in one patient (8.3%). In comparison with DWI, patients with sylvian arterial bright signal intensity showed better ASPECTS score (6.4+/-4.1) than patients without arterial bright signal intensity (4.4+/-1.1), yet it was not statistically significant (p=0.267, t-test). CONCLUSION: SWI at 3T provides added diagnostic information including site of occlusion, collateral flow by arterial bright signal intensity in sylvian fissure and early hemorrhagic transformation in patients with symptomatic MCA occlusion.
