Abstract #1849
Rapid SAR assessment of electrically thin implantable devices using an analytical approach: Proof-of-Principle for RF heating of coronary stents at 7.0 T
Lukas Winter 1 , Eva Oberacker 1 , Celal zerdem 1 , Yiyi Ji 1 , Florian von Knobelsdorff-Brenkenhoff 1,2 , Gerd Weidemann 3 , Frank Seifert 3 , and Thoralf Niendorf 1,2
1
Berlin Ultrahigh Field Facility (B.U.F.F.),
Max-Delbrck Center for Molecular Medicine, Berlin,
Germany,
2
Experimental
and Clinical Research Center (ECRC), a joint cooperation
between the Charit and the Max-Delbrueck Center for
Molecular Medicine, Berlin, Germany,
3
Physikalisch
Technische Bundesanstalt (PTB), Braunschweig and Berlin,
Germany
En route to broader clinical UHF-MR studies it is
essential to gain a better insight into the interaction
of passive conducting implants with radiofrequency
fields. The conclusions drawn from earlier studies are
valuable but constrained to the very specific
experimental setup used. Recognizing the need for an
universal and rapid approach for SAR assessment, this
work derives and validates an analytical expression for
fast SAR estimation of coronary stents. Our findings can
potentially be translated to any patient, coronary stent
type, RF coil configuration and RF transmission regime.
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