Abstract #1523

Improving RF efficiency in the brain and the neck at 7T using a novel pTx coil

Mohamed Tachrount¹, Bleddyn Woodward¹, Emre Kopanoglu¹, Michel Italiaander², Denis Klomp^2,3, Ian Driver¹, and Richard Wise¹

¹CUBRIC, School of psychology, Cardiff University, Cardiff, United Kingdom, ²MR Coils, Zaltbommel, Netherlands, ³Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands

MRI at UHF is promising for a variety of clinical applications however it is challenging because of B0 and B1 inhomogeneities and SAR limitations. To improve the RF efficiency in the brain and the neck, a novel 8Tx/32Rx RF coil has been built by MR coils. Its performance in terms of B1+ intensity and homogeneity at the brainstem/cerebellum and the neck was assessed and compared with the standard Nova Medical 8Tx/32Rx coil. The novel coil allows for a higher B1+ at the brainstem/cerebellum and the neck where B1+ mapping and shimming need further optimisation for ASL application.

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