Comparison of simulation-based and measurement-based RF shimming for whole-body MRI at 7 Tesla

(1.9 m, 85 kg): a) Simulation-based shim, FLASH sequence, transverse plane, b) corresponding simulated B1 distribution. c) Measured shim, FLASH sequence, transverse plane, d) measured absolute flip angle distribution. Fig. 1: RF shimming for cardiac MRI: female volunteer (1.65 m, 70 kg). a) Relative B1 maps (pulse triggered) of individual transmit channels used for calculating the measured shim. Short-axis, cine FLASH, transverse plane: b) measured shim, c) simulation-based shim. a)