1 Section of Cardiovascular Imaging, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA. Electronic address: xub@ccf.org.
2 Section of Cardiovascular Imaging, Sydell and Arnold Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA.