Abstract #3507

Comparison between commercial RF head coils and a new hybrid transmit-array coil based on 12 transmit elements and 22 receive elements for an 8-channel transmission system at 7 T

Alexis Amadon¹, Guillaume Ferrand², Elodie Georget¹, Eric Giacomini¹, Edouard Chazel¹, Marie-France Hang¹, Jeremy Bernard¹, Nicolas Boulant¹, Vincent Gras¹, Alexandre Vignaud¹, and Michel Luong²

¹CEA, DSV, I2BM, NeuroSpin, UNIRS, Gif-sur-Yvette, France, ²CEA, DSM, IRFU, SACM, LISAH, Gif-sur-Yvette, France

This work compares the performance of two commercial RF coils with a new transmit-array hybrid coil developed at NeuroSpin for the human head at 7T. This z-segmented coil uses 11 transceiver dipoles connected to 7 power channels via an SVD-box, one transceiver patch to cover the top of the head, and 10 receive-only 3D loops in-between the dipoles. Its performance outbeats that of the commercial coils both in terms of signal-to-noise ratio and dynamic RF shimming efficiency.

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