Novel design method for gradient coil structures with reduced acoustic noise characteristics
Taracila V, Petropoulos L, Brown R
Case Western Reserve University
A new approach to the design of actively shielded 3D gradient coils is presented. We consider the minimization of the vibrational total power as part of a target field method algorithm. Taking into account the full profile effects of the 1.5 T main magnetic field in the vicinity of primary and shielding gradient coil, it is possible to find new current patterns that reduce the acoustic noise signature of the gradient coil by more than 5 dB per gradient with no significant change in the vital gradient coil performance and characteristics.