1. University Medical Center Utrecht; Department of Radiology, Imaging Division; Heidelberglaan 100 3584 CX Utrecht The Netherlands
2. Department of Pharmaceutics; Utrecht Institute for Pharmaceutical Sciences; 3584 CG Utrecht The Netherlands
3. Biomolecular Imaging, Bijvoet Center; Utrecht University; Padualaan 8 3584 CH Utrecht The Netherlands
4. Institut de Mathématiques de Bordeaux; UMR 5251 CNRS/Université de Bordeaux; F-33400 Talence France