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Abstract #3057

High Resolution 3D 31P Spectroscopic Imaging of the Human Prostate at 7T: Technical Feasibility & In Vivo Measurement

Thiele Kobus1, Andreas K. Bitz2, Mark J. Van Uden1, Miriam W. Lagemaat1, Stephan Orzada2, Arend Heerschap1, Tom W. J. Scheenen1,2

1Radiology, Radboud University Nijmegen Medical Centre, Nijmegen, Gelderland, Netherlands; 2Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany

A thorough safety validation was performed to enable combined use of a 31P TxRx endorectal coil with a 8-channel 1H TxRx array coil. The maximum RF power with the 31P coil was determined. The coupling between the coils while transmitting with the 8-channel 1H coil was studied by B1+ and temperature mapping. Although an increased proton flip angle was observed near the endorectal coil wire, no local temperature increase was observed. The in vivo measurement using adiabatic excitation showed good quality of both prostate imaging and 31P spectra, demonstrating the potential of 31P MRSI of the prostate at high field.