Abstract #2637

Isovolumic Relaxation Time and e' Metrics Evaluated by Deep-learning Analysis of Long-axis Cine: Correlations to Atrial Pressure and Fibrosis

Dana Peters¹, Jérôme Lamy¹, Felicia Seemann², Einar Heiberg³, and Ricardo Gonzales¹

¹Yale Unversity, New Haven, CT, United States, ²National Institutes of Health, Bethesda, MD, United States, ³Lund University, Lund, Sweden

Using a deep-learning tool for tracking the left ventricular valve plane on long-axis cine, markers of diastolic dysfunction could be easily evaluated, including e-prime, a-prime (atrial kick valve velocity), s-prime, and isovolumic relaxation time (IVRT). This analysis, performed in 23 patients with atrial fibrillation, revealed a dependence of both a-prime and IVRT on atrial fibrosis.

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