A newly Developed Hyperintensity Within a Posterior Cerebral Artery Susceptibility Vessel Sign in T2*-Weighted Gradient-Echo Imaging: a Case Report and Correlation with Magnetic Resonance Angiography and Black-Blood Imaging.
10.13104/jksmrm.2011.15.3.257
- Author:
Sung Won YOUN
1
;
Ho Kyun KIM
Author Information
1. Department of Radiology, Catholic University of Daegu School of Medicine, Daegu, Korea. ysw10adest@cu.ac.kr
- Publication Type:Case Report
- Keywords:
Hyperintensity;
Susceptibility vessel sign;
T2*-weighted gradient echo MR imaging;
Slow flow;
Stenosis
- MeSH:
Constriction, Pathologic;
Follow-Up Studies;
Glycosaminoglycans;
Humans;
Magnetic Resonance Angiography;
Magnetic Resonance Spectroscopy;
Magnetics;
Magnets;
Middle Aged;
Passive Cutaneous Anaphylaxis;
Phenobarbital;
Plaque, Atherosclerotic;
Posterior Cerebral Artery
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2011;15(3):257-261
- CountryRepublic of Korea
- Language:English
-
Abstract:
The susceptibility vessel sign (SVS) on T2*-weighted gradient-echo imaging (T2*-GRE) is useful for detecting intra-arterial clots and monitoring the response to thrombolysis. SVS-GRE was observed in a 52-year-old man with acute occlusion of the posterior cerebral artery (PCA) before and after failed intra-arterial thrombolysis. One-week follow-up T2*-GRE revealed a hyperintensity within the SVS-GRE in the affected PCA. The right PCA remained occluded on time-of-flight (TOF) magnetic resonance angiography (MRA), but its P2 segment exhibited luminal patency on contrast-enhanced (CE) MRA. Black-blood MR imaging using a T1-weighted turbo-spin echo sequence revealed narrowing of the arterial lumen and thickening of the wall due to an atherosclerotic plaque. The observations from TOF-MRA, CE-MRA, and black-blood MR imaging suggest that a newly developed hyperintensity within the SVS-GRE seems to be associated with slow flow through a severe atherosclerotic stenosis or near-occlusion.
