High resolution T1 weighted magnetic resonance imaging of the deep brain structures using a reduced bandwidth.
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.
Sigal
R
R
Centre Inter-Etablissement de Résonance Magnétique, Bicêtre Hospital, Paris XI University, Le Kremlin-Bicêtre, France.
Bittoun
J
J
Jolivet
O
O
Behnam
N
N
Suminski
M
M
Zannoli
G
G
Francke
J P
JP
D001921:Brain / Q000033:anatomy & histology*; D002421:Caudate Nucleus / Q000033:anatomy & histology; D003342:Corpus Striatum / Q000033:anatomy & histology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012984:Software