Abstract #2839

Detailing RF Heating Induced by Coronary Stents at 7.0T Using Numerical EMF Simulations and Heating Experiments

Lukas Winter¹, Davide Santoro¹, Alexander Mller¹, Wolfgang Renz¹,², Celal zerdem¹, Andreas Graessl¹, Valeriy Tkachenko³, Jeanette Schulz-Menger³,⁴, Thoralf Niendorf¹,³

¹Berlin Ultrahigh Field Faciltiy (B.U.F.F.), Max-Delbrck Center for Molecular Medicine, Berlin, Germany; ²Siemens Healthcare, Erlangen, Germany; ³Experimental and Clinical Research Center (ECRC), a joint cooperation between Charit Medical Faculty and Max-Delbrck Center for Molecular Medicine, Berlin, Germany; ⁴Department of Cardiology and Nephrology, HELIOS Klinikum Berlin-Buch, Berlin, Germany

This study examines RF induced heating, which potentially can be caused by an electrically conductive coronary stent in combination with RF fields applied at ultrahigh field (UHF) MR. EMF simulations, phantom experiments and MR thermometry were performed and show that in a careful evaluated setup, RF induced heating due to the presence of a coronary stent may not be significant versus the baseline heating induced by a cardiac optimized transmit/receive RF coil at 7.0T.