CPC G01R 33/3628 (2013.01) [G01R 33/3621 (2013.01)] | 8 Claims |
1. A preamplifier arrangement for a magnetic resonance imaging (MRI) system, comprising:
a preamplifier coupled to a loop of a multi-channel coil array of the MRI system, wherein the preamplifier and the loop are subject to potentially form an unstable system with oscillation at one or more peak frequencies;
an impedance matching network disposed between and coupled to the preamplifier and the loop, wherein the impedance matching network is configured to generate a high blocking impedance; and
an input network disposed between and coupled to the preamplifier and the loop, wherein the input network is configured to provide an input to suppress gain at the one or more peak frequencies, and wherein the input network is a distributed input network built-in to the impedance matching network.
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