RF traps for radio frequency coils used in MRI

Details RF traps for radio frequency coils used in MRI RF traps for radio frequency coils used in MRI

2006-08-21

2009-11-24

Shrivastav, Brij B. (Department: 2831)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S318000

Reexamination Certificate

active

07622928

ABSTRACT:
A radio frequency coil includes an operative radio frequency circuit (100, 100′) and a trap radio frequency circuit (110, 110′). The operative radio frequency circuit is tuned to a magnetic resonance frequency and is spatially configured to at least one of generate magnetic resonance in or receive magnetic resonance from a spatial region of interest. The trap radio frequency circuit is tuned to block a selected frequency and is disposed with the operative radio frequency circuit. The trap radio frequency circuit includes at least a generally linear transmission line (120) having a first end (122, 122′) at which the operative radio frequency circuit and the trap radio frequency circuit are coupled together and a second end (124) at which the generally linear transmission line is terminated with a termination impedance (136).

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