Cardiac magnetic resonance (CMR) and three dimensional echocardiography (3DE) in complete evaluation of Ebstein anomaly

Abstract

Summary This study on 10 patients highlights the complementary role of Cardiac magnetic resonance (CMR) and 3D echocardiography in Ebstein anomaly. While 3D echocardiography is excellent for depicting valve anatomy, CMR assesses the functional RV, presence of fibrosis and PA anatomy. GOSE score is accurately calculated on CMR. Background Two dimensional echocardiography (2DE) may be inadequate in detailed assessment of Ebstein anomaly. Complementary role of 3DE and CMR in this anomaly is not well defined in literature. Methods A comparative, non-randomized cohort study of 10 patients with 2DE diagnosis of Ebstein anomaly was carried out after written informed consent and approval from Institute’s Ethics Committee. All patients underwent 3DE and CMR. Patients with congestive heart failure and contraindications to MRI were excluded. 3DE data was obtained on Philips iE33 (Bothell, WA, USA). CMR was done with 1.5T (Siemens, Avanto, Germany) with SSFP (steady state free precession) single shot, SSFP cine and delayed enhanced (DE) sequences in axial and cardiac imaging planes. Imaging parameters included: Diameter and volume of RA, volume of atrialized RV, volume and function of residual RV, tethering and mobility of anterior leaflet (AL), presence and degree of displacement of posterior (PL) and septal (SL) leaflets, any DE, Carpentier classification and GOSE score. 3DE and CMR data were compared with appropriate statistical techniques. Results