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British Journal of Radiology (1995) 68, 261-265
© 1995 British Institute of Radiology
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The British Journal of Radiology, Vol 68, Issue 807 261-265, Copyright © 1995 by British Institute of Radiology

ARTICLES

High resolution T1 weighted magnetic resonance imaging of the deep brain structures using a reduced bandwidth

R Sigal, J Bittoun, O Jolivet, N Behnam, M Suminski, G Zannoli and JP Francke
Centre Inter-Etablissement de Resonance Magnetique, Bicetre Hospital, Paris XI University, Le Kremlin-Bicetre, France.

High spatial resolution T1 weighted images of the brain were acquired in 5-13 min on a whole-body magnetic resonance imager operating at 1.5 T. In order to obtain 5-8 cm field of view images, the receiver bandwidth (Bw) was lowered to 2 kHz. The use of a 2 kHz Bw, instead of the standard 16 kHz Bw, partially compensated the signal loss due to the small pixel size by increasing the signal-to-noise ratio, without scan time penalty. The chemical shift artifact associated with reduced Bw was not observed because fat signal is negligible in the brain.




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