A Novel Method for Amplitude & Phase Mapping of RF Transmit & Receive Fields

Alessandro Sbrizzi¹, Hans Hoogduin¹, Gerard L. G. Sleijpen², Astrid L. Van Lier, Jan J. Lagendijk¹, Peter Luijten¹, Cornelis A. T. van Den Berg¹

In this work we present a new approach for extracting complete complex information about the transmit and receive fields of a RF transmit coil from a B1+ amplitude measurement. The method is based on a Bessel/Fourier modes expansion of the B1+ and B1- maps. The results obtained from FDTD simulations and in vivo measurements confirm the validity of the novel approach.