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Abstract #4525

Comparison of relative RF power deposition for shoulder MRI at 3.0T and 7.0T using 3D dual echo steady state imaging

Marko Hoehne1, Andreas Graessl2, Antje Els2, Thomas Herold3, and Thoralf Niendorf4

1HELIOS Klinikum Berlin Buch, Radiology, Max Delbrück Center for Molecular Medicine (MDC) Berlin,Ultrahigh Field Facility (B.U.F.F.), Berlin, Germany, 2Max Delbrück Center for Molecular Medicine (MDC), Ultrahigh Field Facility (B.U.F.F.), Berlin, Germany, 3HELIOS Klinikum Berlin Buch, Radiology, Berlin, Germany, 4Max Delbrück Center for Molecular Medicine (MDC), Experimental and Clinical Research Center (ECRC), Charite Campus Berlin Buch, Humboldt University Berlin, Ultrahigh Field Facility (B.U.F.F.), Berlin, Germany

Technology advances in ultra-high field systems improve significantly diagnose of different musculoskeletal structures. A challenge of this work examines relative RF power deposition for shoulder MRI with dual echo steady state imaging at 3.0T and 7.0T. Volunteers (n=10, mean age 36.5 ± 8.51 years) were investigated at 3.0 T and 7.0 T. The flip angle was varied for each field strength. A comparison of flip angle between 3.0T and 7.0T showed a SAR gain of approximately 2.6 for the local RF coil setup used at 7.0 T versus the body coil configuration employed at 3.0 T. It is important to considering a right choice of sequences and these parameters.

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