Inclusion Criteria:  Patients with severe symptomatic AS undergoing a TAVR procedure.  Exclusion Criteria:  Failure to provide signed informed consent. Extremely calcified aortic valve (Agatston score >3000 AU) Extremely horizontal aorta. Severe septal hypertrophy (interventricular septum >15 mm as measured by TTE). Extreme tortuosity at the level of the iliofemoral arteries, thoracic or abdominal aorta. Prohibitive surgical risk precluding (according to the Heart Team) conversion to open heart surgery in case of a life threatening complication. Young patients (<18 Years) and pregnant women