| 1. Assessment of aortic annular diameter with 2D and 3D |
| 2. Determine LV and RV systolic function; identifying other associated valve disease or cardiac abnormalities |
| 3. Guide and confirm coaxial alignment of the delivery catheter within LVOT and aortic root |
| 4. Identify the ventricular and aortic ends of the prosthesis prior to deployment of valve to aligne with the aortic valve cusps |
| 5. Optimize bio-prosthetic valve position before deployment |
| 6. Assess severity of aortic regurgitation post valve deployment |
| 7. Assess the complications including LV dysfunction, coronary obstruction, valve embolization, pericardial tamponade, or aortic annular rupture |
