Mitral valve repair is the preferred treatment for patients with severe degenerative mitral valve regurgitation resulting from prolapsed mitral leaflets with or without chordal rupture. The NeoChord procedure is an innovative microinvasive, transventricular, beating-heart chordal replacement technique that is designed to replace ruptured or elongated chordae tendinae on the prolapsing segment of a mitral valve leaflet with artificial chordae made of expanded polytetrafluoroethylene (ePTFE). 1-3 The artificial chordae or neochordae are placed on the mitral leaflet, while the heart is beating using the DS1000 System (NeoChord, Inc St. Louis Park, MN). The DS1000 system is introduced via a transventricular approach through the distal, posterolateral wall of left ventricle. Preprocedure, use of three-dimensional (3D) transoesophageal (TOE) imaging is crucial for optimal patient selection. In addition, 3D TOE is critical for procedural navigation of the device and to confirm ePTFE chordal placement and positioning on the mitral leaflet. Awareness of the morphological details of the prolapsed mitral leaflet segment is an important consideration when assessing patient selection. However, understanding the change in morphological characteristics of the mitral leaflet segments during the procedure is also a key driver for successful outcomes. Use of real time 3D, with single beat acquisition, allows for visualization of the valvular anatomy and any related structural dysfunction with near-instantaneous volume-rendered reconstructions.Additionally, this 3D rendering technique avoids spatial motion artifacts by acquiring 3D volumetric datasets without requiring the need of cardiac or respiratory gating, single beat acquisition of datasets, that is, possible thanks to matrix phased-array transducer technology that includes the use of thousands of transmit-receive elements to generate the image volume. As such, real time 3D TOE