Evaluation of tilted, optimized, non-saturating excitation pulses in 3D magnetic resonance angiography of the abdominal aorta and major branches in volunteers.
Ten normotensive volunteers were imaged with FISP-3D (Fast Imaging Steady Precession) pulse sequences (a steady state gradient recalled echo, SS-GRE, technique) without and with modification by tilted, optimized non-saturating excitation (TONE) customized radio frequency (RF) pulses, for evaluation of the abdominal aorta--in particular the renal arteries. Maximum intensity projection (MIP) angiograms were constructed for each sequence in each volunteer; 15 observers "blinded" to sequence type preferred the images generated from the TONE applied sequence. Analysis showed that this preference was significant.
Roditi
G H
GH
Academic Department of Radiology, Aberdeen Royal Infirmary, Foresterhill, UK.
Smith
F W
FW
Redpath
T W
TW
D001012:Aorta, Abdominal / Q000033:anatomy & histology*; D001027:Aortography / Q000379:methods; D001291:Attitude of Health Personnel; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012077:Renal Artery / Q000033:anatomy & histology*; D012078:Renal Artery Obstruction / Q000175:diagnosis; D016037:Single-Blind Method