Ex vivo antelope heart, fully perfused with pulsatile flow. Stimulating clinical pathology of mitral valve regurgitation. Prolapsing mitral valve to simulate chordal rupture. 4 Panel included flouro (CH 1), endoscopic atrial view (CH 2), 3D echo (CH 3), and endoscopic ventricle view (CH4) showing "ruptured" chords, mitral valve, and partial view of valve view.Human aortic and mitral valve, fully perfused with pulsatile flow. Both the heart rate and volume per stroke have been adjusted to stimulate a patient at rest under anesthesia. Parameters can be customized to stimulate various cardiac states.