Analytical solution for phase modulation in BURST imaging with optimum sensitivity.
In order to improve the efficiency of BURST imaging, a new phase-modulation scheme of the DANTE-type RF excitation is proposed. It is shown that analytical optimization of the phase-modulation scheme with optimal SNR can be found for an arbitrary number N of subpulses in the RF excitation. Both theory and experiment indicate a maximum attainable gain in efficiency of the square root of N, compared to nonmodulated (constant-phase) excitation schemes.
van Gelderen
P
P
NIH in Vivo NMR Research Center, BEIP, NCRR, Bethesda, Maryland 20892-1060, USA.
Duyn
J H
JH
Moonen
C T
CT
D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008433:Mathematics; D008961:Models, Structural; D012680:Sensitivity and Specificity