Christian Rubbert, MD: formerly Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA, now Department of Diagnostic and Interventional Radiology, Medical Faculty, University of Dusseldorf, Dusseldorf, Germany. [email protected]

Andres A. Kohan, MD: formerly Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA, now Department of Radiology, Hospital Italiano de Buenos Aires, Buenos Aires, Argentinia

Jose L. Vercher-Conejero, MD: formerly Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA, now Department of Diagnostic Imaging (Nuclear Medicine), Hospital Universitario y Politecnico La Fe, Valencia, Spain

Manoj Narayanan, PhD: Philips Healthcare, Miner Road, Highland Heights, OH, USA

Antonis Kalemis, PhD: Philips Healthcare, Guildford Business Park, Guildford, Surrey, UK

Karin A. Herrmann, MD, Peter F. Faulhaber, MD, Norbert Avril, MD: Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA

Raymond F. Muzic Jr., PhD: Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH, USA. [email protected]