1. LANCC LCCRCC RVPlane of Sinus of Side View ValsalvaAnnulusFree Edge AortaCommissure Coaptation Frontal View Leaflet Surface Nodule of Sino- Arantus TubularLV Side View Junction

2. Severity AR Jet/LVOT DiameterMild < 25%Mod25-50%Severe > 50%Severity AR DepthMild < 2 cm below AVMod2 cm below AL of MVSevere Jet to Pap Ms 3. Decel Slope measured by CWD from DTG viewRate at which the LV and Aortic pressure equalizesIs a function of the severity of AR 4. Time (sec) Velocity m/sec A EVTILVI Forward SV = CSALVI x VTILVI LVTime (sec)Velocity m/sec VTILVOT (cm) Total SV = CSALVOT x VTILVOTCSA(cm2) = 0.785 x D2Regurgitant SV = Total SV Forward SVRF = Regurgitant SV Total SV 5. 45 cm/secrRJRV = 2 r2 * Va * /180Va = 45 cm/secROarea = RV / VTI RJ 6. Aortic LeafletSeparationAortic ArchLack ofDilation Coaptation Aortic Regurgitation