1. Department of Radiology and Radiological Science, Division of Cardiovascular Imaging, Medical University of South Carolina, 25 Courtenay Dr, Ashley River Tower, Charleston, SC 29425.
2. Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt, Germany.
3. Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, Jiangsu, China.