MRI diagnosis of mitral atresia / 中华放射学杂志

ABSTRACT

Objective To analyse the pathologic changes and MRI appearances of mitrial atresia (MA). Methods MRI appearances of 5 cases with MA confirmed by operation were reviewed and compared with angiocardiography (CAG). Results MRI demonstrated the pathologic characteristics of three types of MA according to the traditional classificationbiventricular hearts with imperforate mitral valve (1 case),univentricular heart of right ventricular type with absent left atrioventricular connection (3 cases) and univentricular heart of left ventricular type with imperforate mitral valve (1 case).MRI still provided anatomic information of associated anomalies including mainly aneurysms of atrial septum (1 case),total anomalous pulmonary venous drainge into superior vena cava (1 case),absent left pulmonary artery (1 case) and pulmonary stenosis (4 cases). The right atrial and(or) ventricular angiocardiograms in the 5 cases could not display the anatomic morphology of the malformation,with exception of one case only. Conclusion MRI is valuable in diagnosis of MA.