1. Department of Radiology, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain

2. Paul Strickland Scanner Centre, Mount Vernon Cancer Centre, Northwood, Middlesex, United Kingdom

3. Department of Radiology, Hospital Clínic Barcelona, Barcelona, Spain

4. Department of Radiology, Clínica Girona and Hospital Santa Caterina, Girona, Spain

5. Clinica Las Nieves, Sercosa, Jaén, Spain; Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA

6. Mestrelab Research, Santiago de Compostela, Spain