RF Coils

These are rf coils that were designed and built on site at the CFMM for our 7T and 9.4T systems.

This is a 12-channel transmit/receive (transceive) radiofrequency coil developed for imaging the human brain at 7 Tesla. A hybrid decoupling-scheme was implemented that capacitively decouples coil elements in the azimuthal direction and overlaps coil elements along the longitudinal direction. The decoupling scheme allows coil elements to be arrayed along all three Cartesian axes; this facilitates shimming of the transmit field and parallel imaging acceleration along the longitudinal direction in addition to the standard transverse directions. Each channel can be independently controlled during imaging using a Varian 16-channel console and a 16-by-1-kW RF-amplifier matrix. This is a transmit/receive radiofrequency coil developed specifically for imaging the mouse brain at 9.4 Tesla. The coil is a four-turn solenoid and produces high signal-to-noise ratio. A sliding bar is used for stabilizing the mouse during imaging.