Transcatheter aortic valve implantation (TAVI) is a novel therapeutic option, recommended for the treatment of patients with severe aortic stenosis who are at high risk from conventional open surgery. Multiple registries have documented favorable outcomes, including survival and quality of life. Success of TAVI depends upon the consideration of patient selection. Echocardiography is a mandatory tool to provide important data in patient selection, evaluation, guidance of intervention, and patient follow-up.