title: Echo-Doppler angle determination for noninvasive transmitral blood velocity calculations in normal and porcine bioprosthetic mitral valves.
mesh_terms: D001705:Bioprosthesis; D001783:Blood Flow Velocity; D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve / Q000502:physiology; D014463:Ultrasonography