Abstract #0304
From Real-Time SAR Assessment to Temperature Distributions in Coronary Stents at 7T
Lukas Winter 1 , Eva Oberacker 1 , Celal zerdem 1 , Yiyi Ji 1 , Florian von Knobelsdorff-Brenkenhoff 1,2 , Gerd Weidemann 3 , Bernd Ittermann 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-CMR studies it is
essential to gain a better insight into the interaction
of coronary stents with radiofrequency fields. Previous
explorations into the assessment of SAR and temperature
levels are valuable but constrained to the very specific
experimental setup used. Recognizing the need for a
universal SAR estimation of passive conducting implants,
this work links SAR derived from a real-time SAR
estimation to actual temperature behavior. To meet this
goal, numerical thermal simulations, E-field
measurements and RF heating experiments are performed in
coronary stents.
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