Saikat Sengupta1,2, Brian E. Welch, 1,3, Adam Anderson1,4, John Gore1,4, Malcolm J. Avison1,4
We present a novel method of eddy current compensation for higher order shim induced eddy currents in a multislice Dynamic Shimming (DS) experiment, without the use of extra hardware. This method is based on an assumption of reaching an eddy field steady state during a fast field echo (FFE) acquisition. Using calibration scans, we characterize eddy field interactions between any two shims in terms of correction factor vectors that remain invariant with sample and shim values, for a given time between shim switches. These factors are then used to prospectively compensate for expected eddy fields in any FFE DS experiment.