Targeted Flow Cardiac MRI in Neonates with Intracardiac Shunts: A Novel Multi-Modality Imaging Approach to Hemodynamic Assessment.

Simpkin, Charles T; Taylor, Anne C; MacLean, Jessica; Cookson, Michael; Friesen, Richard; Downs, Emily; Ivy, D Dunbar; Gonzalez de Alba, Cesar et al. · J Pediatr · 2026

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Abstract

Distinguishing the relative contributions of pulmonary vascular resistance and intracardiac shunts to elevated right-heart pressures in infants remains challenging when relying on clinical assessment and echocardiography. We describe our initial experience implementing cardiac MRI to measure Qp:Qs non-invasively using no, minimal, or baseline sedation in infants with possible pulmonary hypertension.