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.
Keywords