Validation of a Very Fast B1-Mapping Sequence for Parallel Transmission on a Human Brain at 7T

Alexis Amadon¹, Martijn Anton Cloos¹, Nicolas Boulant¹, Marie-France Hang¹, Christopher John Wiggins¹, Hans-Peter Fautz²

Fast rather than accurate B1-mapping may be seeked for Tx-array calibration. We evaluate a 2D technique which is 6 times faster than a gold standard method. We compare the Flip Angle maps issued from tailored pulses designed with both calibration methods. These pulses target whole human brain excitation homogenization at 7T. Their outcome is very similar, which shows the benefit of using the faster sequence.