- Poster presentation
- Open Access
Characterization and quantification of dynamic left atrioventricular valve regurgitation after atrioventricular septal defect correction with 4D Flow MRI and retrospective valve tracking
© Calkoen et al.; licensee BioMed Central Ltd. 2014
- Published: 16 January 2014
- Atrioventricular Valve
- Regurgitant Fraction
- Defect Correction
- Atrioventricular Septal Defect
- Good Depiction
Regurgitation of the left atrio-ventricular valve (LAVV) is common after atrioventricular septal defect (AVSD) correction and up to 15% of the patients require surgery of the LAVV during follow-up. Reliable quantification of LAVV regurgitation after AVSD correction is essential for indicating surgical correction, but has shown to be difficult using echocardiography. 4DFlow MRI with retrospective valve tracking allows visualization and quantification of trans-valvular blood flow. The aim of cuurent study was to describe dynamic behaviour of regurgitant jets of the LAVV after AVSD correction and to quantify severity of regurgitation using 4DFlow MRI with retrospective valve tracking.
angle between annulus and regurgitation jet
Four chamber MPR (angle 1)
Two chamber MPR (angle 2)
Maximum angle (degrees)
Minimum angle (degrees)
Angle difference (degrees)
With 4DFlow MRI and streamline visualization, characterization and quantification of regurgitant jets of the LAVV in patients after AVSD correction is feasible and our findings have important implications for assessment of LAVV regurgitation with echocardiography. Regurgitant jet(s) change dynamically during systole with changes in angle up to 50°, making quantification of LAVV regurgitation using echocardiography or conventional 2D-MRI difficult.
Willem Alexander Kinder Fonds and Dutch Technology Foundation (STW) project number 11626.
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