Abstract
Introduction Patients with univentricular hearts rely on a single functioning ventricle to provide blood flow to both the systemic and pulmonary circuits following completion of the Fontan circulation. Tracking the function of the remaining ventricle in these patients is of interest as their long-term survival continues to improve and the ability of this single ventricle to sustain an increased load or serve an atypical role, as in the case of systemic right ventricles, is continually tested. Velocity-encoded phase contrast magnetic resonance imaging (PC MRI) may provide an efficient technique with high spatial resolution to attain threecomponent myocardial tissue velocities in addition to flow information throughout the cardiac cycle which could be useful in the monitoring of these patients.
Highlights
Patients with univentricular hearts rely on a single functioning ventricle to provide blood flow to both the systemic and pulmonary circuits following completion of the Fontan circulation
Velocity-encoded phase contrast magnetic resonance imaging (PC MRI) may provide an efficient technique with high spatial resolution to attain threecomponent myocardial tissue velocities in addition to flow information throughout the cardiac cycle which could be useful in the monitoring of these patients
This study investigated the use of velocity-encoded PC MRI to produce three-directional velocity fields of myocardial motion throughout the cardiac cycle for analysis of ventricular wall motion and function in pediatric patients
Summary
Patients with univentricular hearts rely on a single functioning ventricle to provide blood flow to both the systemic and pulmonary circuits following completion of the Fontan circulation. Velocity-encoded phase contrast magnetic resonance imaging (PC MRI) may provide an efficient technique with high spatial resolution to attain threecomponent myocardial tissue velocities in addition to flow information throughout the cardiac cycle which could be useful in the monitoring of these patients. TFhigrueere-d1irectional velocity contours for single left ventricle in early systole Three-directional velocity contours for single left ventricle in early systole. TFhigrueere-d2irectional veolicty contours for single right ventricle in early systole Three-directional veolicty contours for single right ventricle in early systole. With univentricular hearts during conversion to and following completion of the Fontan circulation
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