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Abstract #3220

Respiratory changes in pulmonary flow distribution in Fontan circulation using “5-D” flow MRI

David Rutkowski1,2, Christopher J. François2, and Alejandro Roldán-Alzate1,2,3

1Mechanical Engineering, UW Madison, Madison, WI, United States, 2Radiology, UW Madison, Madison, WI, United States, 3Biomedical Engineering, UW Madison, Madison, WI, United States

The purpose of this study was to evaluate the respiratory effects on particle trace distribution from the vena cava to the pulmonary arteries in single ventricle patients with TCPC. Six patients were imaged using PC-VIPR and a scheme that allows for double gating to the ECG and respiratory cycles, providing flow data for separate respiratory phases. Results displayed a non-equal flow distribution to the pulmonary arteries from the vena cava and a significant difference in pulmonary flow distribution between inspiration and expiration. This may indicate the importance accounting for respiratory cycle variations when interpreting clinical TCPC results.

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