Patent ID: 6492816
Filing Date: 2002-12-10
Classification: G01R

Abstract:
An acoustic liner for use with a magnetic field gradient coil in a magnetic resonance imaging (MRI) system, the liner comprisingan acoustic sheet, adapted to be fitted to the gradient coil in such a way that the inner surface of the sheet is movable relative to the gradient coil, and an acoustic conducting path for carrying an electrical current provided within or connected to the sheet, arranged such that in use a current pulse can be applied to the gradient coil and a current pulse can be applied to the acoustic conducting path in synchronism therewith, wherein the acoustic conducting path is arranged such that Lorentz forces on the acoustic conducting path in the magnetic field produced by the MRI system cause the acoustic conducting path to move relative to the gradient coil in such a way that the inner surface of said sheet remains substantially stationary.