Abstract #1310
A hybrid dielectric/birdcage double tuned volume resonator for high field MRI
Sebastian Arnold Aussenhofer 1 , Paul de Bruin 1 , and Andrew Webb 1
1
Radiology, C.J. Gorter Center for High Field
MRI LUMC, Leiden, Select, Netherlands
This work describes a new principle to build double
tuned volume resonators for high field human imaging by
combining a dielectric HEM mode resonator with a
birdcage coil. The dielectric resonator acts as the
proton transceiver (298 MHz at 7T); the birdcage acts as
the sodium transceiver (79 MHz at 7T). By inserting the
birdcage into the dielectric coil a double tuned volume
coil can be constructed if each of the birdcages rungs
is proton frequency trapped. The homogenous B1 fields of
the two resonators are preserved in the joint setup. A
resonator was constructed to acquire high resolution
proton and sodium images of the human wrist.
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