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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