Abstract #0216

Degenerate Birdcage Coil Mixed with Bent Dipole Antennas to Enhance Central SNR in Phosphorus MRI/MRS of Human Brain at 7T

Daniel Wenz^1,2, Thomas Dardano^1,2, Mark Widmaier^1,3, Songi Lim^1,2, Zhiwei Huang^1,2, and Lijing Xin^1,2

¹CIBM Center for Biomedical Imaging, Lausanne, Switzerland, ²Animal Imaging and Technology, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland, ³Laboratory of functional and metabolic imaging, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & SystemsDipole antennas can be combined with loop elements to increase a central SNR in human brain MRI at 7T (300MHz). However, this approach was not investigated at lower frequencies. In this study a degenerate birdcage coil was combined with a pair of bent dipole antennas to increase a central SNR for phosphorus MRS of human brain at 7T (120MHz). Simulations showed that this approach could provide a 1.6-fold central SNR gain vs. degenerate birdcage-only. The RF coil was constructed and successfully tested at the bench. In the next step, an experimental validation of the proposed strategy will be performed.

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