Jay Moore1,2, Marcin Jankiewicz1,3,
Adam W. Anderson1,4, John C. Gore1,4
1Institute of Imaging Science,
Vanderbilt University, Nashville, TN, United States; 2Department
of Physics and Astronomy, Vanderbilt University, Nashville, TN, United
States; 3Department of Radiology and Radiological Sciences,
Vanderbilt University, Nashville, TN, United States; 4Department
of Biomedical Engineering, Vanderbilt University, Nashville, TN, United
States
Results
include 3D δB0 and B1+ field maps
in the human brain at 7 T. Hyperbolic secant pulses with a range of
bandwidths are evaluated for non-selective inversion uniformity in this
context. Numerical optimization of hyperbolic secant waveform parameters
(β and μ) is shown to result in noticeably improved inversion
uniformity as compared to pulses with the same bandwidth and μ=5.
Keywords