American Journal of Neuroradiology, Vol 17, Issue 8 1507-1513, Copyright © 1996 by American Society of Neuroradiology
ARTICLES |
Adult cerebrovascular disease: role of modified rapid fluid-attenuated inversion-recovery sequences
JA Alexander, S Sheppard, PC Davis and P Salverda
Department of Radiology, Emory University School of Medicine, Atlanta, Ga, USA.
PURPOSE: To compare a rapid fluid-attenuated inversion-recovery (FLAIR) sequence with T1-weighted, fast spin-echo proton density-weighted, and T2-weighted images in the evaluation of cerebrovascular disease. METHODS: All patients underwent standard T1-, proton density-, and T2- weighted fast spin-echo and fast FLAIR MR imaging at 1.5 T. Images were compared for lesion size, location, and conspicuity. RESULTS: Forty- five infarctions were identified on T2-weighted and fast FLAIR sequences. Lesion size was comparable on the proton density-weighted, fast T2-weighted, and fast FLAIR sequences, although lesion conspicuity was superior on the fast FLAIR images in 43 (96%) of the lesions. Associated periventricular and pontine hyperintensities were more extensive on the fast FLAIR images. CONCLUSION: Our modified fast FLAIR technique provided improved conspicuity of infarctions and white matter disease as compared with T1-, proton density-, and T2-weighted spin- echo images, and a reduced scan time compared with conventional FLAIR sequences in patients with cerebrovascular disease.
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