Abstract #0566

An 8Tx dipoles/32Rx loop coil array – Evaluation of fMRI performances in auditory cortices at 7T

Jérémie Daniel Clément¹, Sandra Da Costa², Rolf Gruetter^1,3,4, and Özlem Ipek^2,5

¹LIFMET, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, ²CIBM-AIT, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, ³Department of Radiology, Université de Lausanne, Lausanne, Switzerland, ⁴Department of Radiology, Université de Genève, Genève, Switzerland, ⁵Department of Biomedical Engineering, King's College London, London, United Kingdom

The performances of a 32-channel receive coil array combined with a tight-fitted whole-brain dipole coil array were investigated. Functional MRI data targeting the auditory cortices was acquired. Noise correlation matrices, SNR and g-factor maps were measured. Compared to a commercial 32Rx, the in-house built 8T/32Rx coil array demonstrated higher robustness in the fMRI results. Lower noise correlation coefficients were measured with the in-house built 8Tx/32Rx coil array while the overall experimentally measured SNR and g-factor maps were comparable.

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