ELECTRONIC POSTER - ismrm

15:00 3896. On the Heating of Small Inductively Coupled RF Coils Mounted on an
Intravascular Model Catheter During MR Imaging
Harald Busse 1 , Gregor Thörmer 1 , Nikita Garnov 1 , Jürgen Haase 2 , Thomas Kahn 1 ,
Michael Moche 1
1 Diagnostic and Interventional Radiology, Leipzig University Hospital, Leipzig, Germany; 2 Physics and
Geosciences Department, Leipzig University, Leipzig, Germany
Applications in interventional MR angiography would potentially benefit from a safe and reliable localization of guidewires and
catheters. Small inductively coupled RF coils have already been suggested or used as MR-visible markers for various purposes. When
using such markers inside the body, however, inductively coupling during RF-intense MRI may pose a safety hazard. We have
therefore investigated RF-exposed markers mounted on an intravascular model catheter and submerged in a vessel phantom under
different flow conditions. While a considerable but small heating (