Key result
Cine MRI analysis revealed that pulmonary vein orifice size decreases by a mean of 32.5% during atrial systole, with location changes up to 7.2 mm, indicating instability during the cardiac cycle.
Population
25 healthy volunteers
Design
Cross-sectional
Authors
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May inform cycle-aware ablation planning to reduce stenosis risk; leaves open prospective outcome validation.
Observational (n=25)
Pulmonary vein orifice size and location change significantly during the cardiac cycle, suggesting that radiofrequency ablation should avoid the presumed orifice to prevent stenosis.
Lickfett et al. (2005) conducted an observational in Healthy volunteers (n=25). Cine magnetic resonance imaging (MRI) was evaluated on Changes of pulmonary vein orifice size and location throughout the cardiac cycle. Cine MRI analysis revealed that pulmonary vein orifice size decreases by a mean of 32.5% during atrial systole, with location changes up to 7.2 mm, indicating instability during the cardiac cycle.