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High resolution T1 weighted magnetic resonance imaging of the deep brain structures using a reduced bandwidth
R Sigal1, J Bittoun, O Jolivet
1Centre Inter-Etablissement de Résonance Magnétique, Bicêtre Hospital, Paris XI University, Le Kremlin-Bicêtre, France.
The British Journal of Radiology
|March 1, 1995
Abstract:
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.