Related Experiment Video
Updated: May 10, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Magnetic resonance imaging of a restrictive atrial septal defect in a univentricular connection
Cheryl G Zvaigzne1, Vijay Moorjani, David J Patton
1Division of Diagnostic Imaging, University of Calgary, Alberta Children's Hospital, Calgary, AB, Canada. cgzvaigz@gmail.com
Abstract:
Magnetic resonance imaging (MRI) provides accurate and valuable information regarding cardiac shunts including their location, size, and flow. We describe the MRI findings of a restrictive atrial septal defect within a complex case of congenital heart disease: univentricular atrioventricular connection of left ventricular type with right-sided discordant atrioventricular connection (single), absent left atrioventricular connection, and ventriculoarterial discordance. Few similar cases are reported in the literature. Magnetic resonance imaging may add valuable information regarding restrictive atrial shunts in univentricular hearts.
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