Analysis of 3D Dataset of the Mitral Valve from Transesophageal Echocardiography, using the free and open-source 3DSlicer (https://www.slicer.org/), with the extensions: Slicer Heart, Sequences and the experimental Valve Annulus Analysis software developed by Dr. Matt Jolley and team (https://www.research.chop.edu/people/matthew-a-jolley). Video by Giovanni Gadotti MD.