SYSTEM AND METHOD FOR DECOUPLING MAGENTIC RESONANCE IMAGING RADIO FREQUENCY COILS WITH A MODULAR MAGNETIC WALL

摘要

A system and method for decoupling radio frequency (“RF”} coils arranged in proximity to each other is provided. The decoupling is achieved using a magnetic wall that includes resonators arranged on an electrically insulating substrate. The magnetic wall is placed between the RF coils. When an electromagnetic field produced by one of the RF coils is incident on the magnetic wall, the magnetic wall acts to cancel the incident electromagnetic field by attenuating or redirecting the incident field. The magnetic wall is modular, and an array of such magnetic walls can be used to enclose individual RF coil elements, or sub-arrays of two or more RF coil elements.

主权项

1. A magnetic wall for decoupling radio frequency (RF) coils arranged in proximity to each other, comprising:
a plurality of resonators composed of a conductive material, each of the plurality of resonators being sized and shaped such that in the presence of an incident electromagnetic field the resonators generate an electromagnetic field that cancels the incident electromagnetic field; and a substrate composed of an electrically insulating material, the substrate being configured to maintain the plurality of resonators in a spaced arrangement.