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Abstract #4515

Assessment of Lesion Characteristics Post RF Ablation Procedure in a Chronic Canine Model of Atrial Fibrillation

Sathya Vijayakumar1, 2, Ravi Ranjan2, Derek J. Dosdall2, Kyungpyo Hong2, 3, Daniel Kim1, 2, Nassir F. Marrouche2, Eugene G. Kholmovski1, 2

1UCAIR, Dept. of Radiology, University of Utah, Salt Lake City, UT, United States; 2CARMA, Dept. of Cardiology, University of Utah, Salt Lake City, UT, United States; 3BioEngineering, University of Utah, Salt Lake City, UT, United States

This work examines the contrast kinetics of post radio-frequency ablation lesions in the myocardium of a pacemaker induced atrial fibrillation canine model. We image these dogs, immediately after ablation procedure for a duration of 2.5 hours and repeat imaging every week after.

Keywords

ablated ablation ablations absolutely according acute alive almost animal animals appearance approved array assessment atrial atrium authors began best better bioengineering body boundaries bright canine cardiology care catheter chambers characteristics characterize chronic city clearly clinically coils comparative completely contrast course dependence dept diagnostic diamond differentiate distinct divided dogs dose earlier early enable enhancement evaluated every femoral fibrillation foundation function future gadolinium gated good heart help hence highly histology hong hours identify immediate immediately improve induced initial injection introducer inversion involve kinetics knowledge lack lake late lesion lesions like local localizers longitudinal measured minute minutes model mongrel month myocardial myocardium normalized observation outcome pacing parallel permanent physiology placed plot post preparation prepared previously procedure project protocol radiology rapid recovery resolution respectively respiratory salt scanner serial series session sessions sheath spine still studied studies suite supported survival thank therapies transient transported typically understanding uptake varies ventricle ventricular visualized volume week weeks whereas whole