B1 Estimation Using Adiabatic Refocusing: BEAR

Keywords

ability accurate acquisition acquisitions adiabatic agreement appropriate approximately assuming bandwidth bear block calibration candidate causing changing characteristics closely confined dashed define depend dependence describe designed determine determined deviation deviations dynamic effective electrical eliminate engineering ensures equal estimation even exceeding excite experimentally fast fields frequency full function gain generate giving good head ideal illustrate important imposes in vivo increasing inhomogeneity insensitive insensitivity limit limiting linear linearly little localized long made magnetization magnitude magnitudes make making mapping maps match measures moderately near negated nevertheless nominal note novel numerical observation offset operate passage peak performance perimeter perturbation phantom plots profile projection projections pulse pulses quality quantitative readout receiver refocused refocusing relationship relies repeated resonant respective reversed robust scaling scanner selective sensitivity short silver simulated simulation simulations slice solid specified spin system threshold transmit transmitter transverse twice unwanted validate variation variations volume volumetric