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Radiology, Vol 185, 661-665, Copyright © 1992 by Radiological Society of North America

ARTICLES

Intracerebral lesion contrast with spin-echo and fast spin-echo pulse sequences

AM Norbash, GH Glover and DR Enzmann
Department of Radiology, Stanford University School of Medicine, CA 94305-5105.

Fast spin-echo (FSE) magnetic resonance (MR) imaging was compared with conventional, peripherally gated T2-weighted spin-echo (SE) imaging in the detection of high- and low-signal-intensity lesions in the central nervous system. Lesion detectability was determined with percentage of contrast measurements and contrast-to-noise ratios with two different measurements for noise. All three measures of lesion detectability were similar. FSE and SE sequences were quantitatively equivalent in the detection of high-signal-intensity lesions. The SE sequence, however, was superior to the FSE sequence in the detection of small, low-signal- intensity lesions in the central nervous system caused by magnetic susceptibility effects.


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[Abstract] [Full Text]


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