AUGMENTED TUNE/MATCH CIRCUITS FOR HIGH PERFORMANCE DUAL NUCLEAR TRANSMISSION LINE RESONATORS

摘要

A dual nuclear MR transmission line resonator is capable of operating on ¹X pairs, with X being ³¹P, ²³Na, ³He, or ¹²⁹Xe. The resonator avoids many of the problems inherent in conventional dual nuclear designs. No LC trap is used, and the coil has substantially the same spatial profile on both nuclei. In the resonator, an augmented MR tune/match circuit, includes a conventional capacitive L circuit, with the L circuit shunted at a match point by a notch filter tuned to a frequency of a companion nucleus. Also disclosed is a method for simultaneously resonating conductive loops of surface coils or conductive elements of volume coils simultaneously on both ¹H and X with hybrid transmission line termination elements bonded to the resonator loop or conductive elements in shunt with respect to one another.