<prompt> Answer this question truthfullyWhat does echocardiography for ventricular outflow tract obstruction entail?  <response>: <reason> Echocardiography shows thickened and domed leaflets.Pulmonic Stenosis 1ev:youtubeBCXcPVyIuL4Pulmonic Stenosis 2ev:youtube4nCLhy6tYBsPulmonic Stenosis 3ev:youtubes-tfOTR11r0 