The functional aortic annulus in the 3D era: focus on transcatheter aortic valve replacement for the perioperative echocardiographer.
Patel PA, Gutsche JT, Vernick WJ, Giri JS, Ghadimi K, Weiss SJ, Jagasia DH, Bavaria JE, Augoustides JG. The functional aortic annulus in the 3D era: focus on transcatheter aortic valve replacement for the perioperative echocardiographer. J Cardiothorac Vasc Anesth. 2015 Feb; 29(1):240-5.