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
Journal of the Korean Society of Magnetic Resonance in Medicine
;
: 257-261, 2011.
Article
Dans Anglais
| WPRIM
| ID: wpr-27663
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.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Phénobarbital
/
Anaphylaxie cutanée passive
/
Spectroscopie par résonance magnétique
/
Études de suivi
/
Angiographie par résonance magnétique
/
Sténose pathologique
/
Artère cérébrale postérieure
/
Plaque d'athérosclérose
/
Aimants
/
Glycosaminoglycanes
Type d'étude:
Étude observationnelle
/
Étude pronostique
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Journal of the Korean Society of Magnetic Resonance in Medicine
Année:
2011
Type:
Article
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