D. W. Haw, B. Dalrymple, F. Van Sas, T. J. Scholl, and B. A. Chronik Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada Introduction: Virtually all applications in MR require the rapid switching of gradient fields within the scanner, and many emerging applications take advantage of rapidly switched shim coils; eddy-currents generated in the surrounding s...