A.N. Gourtsoyiannis: 1. Professor and Chairman, Department of Radiology, University of Crete; 2. Former President of ESGAR (European Association of Radiology); 3. President of ECR 2003, 4. President of EAR (European Association of Radiology)

P. Ros: 1. Executive Vice Chair and Associate Radiologist-in-Chief, Department of Radiology, Brigham and Women's Hospital/Harvard Medical School, Boston, 2. Professor of Radiology, Harvard Medical School Boston. 3. Director, Partners Radiology (Partners HealthCare System integrates Brigham and Women's and Massachusetts General Hospital) 4. Visiting Professor in Abdominal Imaging, Armed Forces Institute of Pathology, Washington, DC