1. Department of Diagnostic and Interventional Radiology, University Hospital Cologne, Institute for Diagnostic and Interventional Radiology, Cologne, Germany

2. Philips Healthcare, R&D CT Innovation, Haifa, Israel

3. Department of Radiology, University Hospital of Heidelberg, Heidelberg, Germany

4. Department of Radiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA