Background: Recent advances in three-dimensional (3D) echocardiography allow to obtain real-time 3D transesophageal (RT3DTEE) images intraoperatively. Methods: Preoperative transthoral echocardiography (TTE) revealed: hypertrophic ventricular septum (TTE:19.3 mm), systolic anterior motion (SAM) not causing obstruction and malcoaptation of the anterior mitral valve leaflet (AMVL), and posterior mitral valve leaflet (PMVL) with severe mitral regurgitation. Results: Intraoperative TEE with a x7-2t MATRIX-array transducer (Philips, Andover, MA, USA) with a transducer frequency of x7-2 t mHz, connected to a iE33 (Philips), shows us that the main mechanism and site of regurgitation was an AMVL cleft. We also measured a 24.3-mm thickness of the ventricular septum and analyzing the 3D full volume acquisition revealed that there was no SAM. Conclusion: Intraoperative RT3DTEE permitted comprehensive 3D viewing of the mitral valve revealing the mechanism of mitral valve regurgitation, SAM, and the exact width of the hypertrophic ventricular septum.,
Journal of Cardiac Surgery
Erasmus MC: University Medical Center Rotterdam

Scohy, T., ten Cate, F., Lecomte, P., Vletter-McGhie, J., de Jong, P., Hofland, J., & Bogers, A. (2008). Usefulness of intraoperative real-time 3D transesophageal echocardiography in cardiac surgery. Journal of Cardiac Surgery, 23(6), 784–786. doi:10.1111/j.1540-8191.2008.00666.x