Eugene G. Kholmovski1,2, Ravi Ranjan2, Sathya Vijayakumar1,2, Nathan A. Angel2, and Nassir F. Marrouche2
1UCAIR, Department of Radiology, University of Utah, Salt Lake City, UT, United States, 2CARMA Center, University of Utah, Salt Lake City, UT, United States
Catheter
RF ablation is a widely accepted procedure for treatment of cardiac
arrhythmias. Recently, native (non-contrast) T1-weighted (T1w) MRI
was proposed to characterize RF lesions immediately post-ablation. The main aim of
this work was to study how the visibility and volume of RF lesions in native
T1w MRI changes with time after ablation. We have found that reduction of T1 relaxation time of RF ablated myocardium is
transient. The visibility of RF ablation lesions and volume of the
corresponding enhanced regions in native T1w MRI drastically reduce few days after
ablation.
