Abstract #2601
Multimodality Cardiac Magnetic Resonance Imaging to assess large intramural lesions of a new irrigated needle catheter on sheep infarct model
Julie Magat 1 , Benjamin Berte 1 , Hubert Cochet 1 , Jrme Naulin 1 , Daniele Ghidoli 2 , Pierre Jais 1 , Stephen Henry Gilbert 3 , Olivier Bernus 1 , and Bruno Quesson 1
1
IHU-LIRYC U1045, University of Bordeaux,
Pessac, France,
2
Biosense
Webster,R&D, Diamond Bar, California, United States,
3
Mathematical
Cell Physiology, Max Delbrck Center for Molecular
Medicine, Berlin, Germany
Catheter ablation became standard practice for the
treatment of ventricular tachycardia. However,
radiofrequency catheter ablation is limited by lesion
depth. The aim of this study was to evaluate the lesion
site area on sheep infarct model and characteristics of
intramural ablation using a new irrigated needle
catheter by MRI. We present results obtained using T
1
mapping/weighted
after contrast injection at 1.5T and high resolution
images at 9.4T. With
in vivo
and
ex
vivo
images,
we were able to identify infarct area in the septum and
lesions due to catheter ablation. Moreover, high field
MRI allowed us (resolution of 80m x 80m x 235m) to
evaluate precisely ablations zones inside the muscle.
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