Acoustic Noise Reducing RF Coil For Magnetic Resonance Imaging

摘要

An RF coil assembly for use in a Magnetic Resonance Imaging scanner incorporates sound absorbing material in its construction for the purpose of attenuating the sound perceived by a patient lying inside the RF coil. Unlike a conventional RF coil assembly in which rigid components are used to support the coil within the magnet bore, the quiet RF coil assembly is constructed without rigid support components. In one embodiment, open cell foam may be used to support the RF coil components and the entire assembly is wrapped in a. flexible cloth-like material.

主权项

1. An MRI scanner comprising:
an MRI magnet assembly including a magnet housing providing an axial bore and containing a cylindrical magnet therewithin such that the cylindrical magnet is coaxially positioned with respect to the axial bore, the cylindrical magnet being equipped to generate a substantially homogeneous magnetic field within an imaging region of the axial bore; and a Radio Frequency (RF) coil assembly coaxially mounted to the MRI magnet assembly within the axial bore and surrounding the imaging region, the RF coil assembly including, a non-rigid sound absorbing substrate and an electrical coil sub-assembly comprised of inductive and capacitive elements, wherein said sub-assembly is supported by the non-rigid substrate.