1. Molecular Imaging Laboratory, MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
2. Department of Thoracic Surgery, European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
3. Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy
4. Department of Radiology, European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
5. Department of Oncology, University of Milan, Via Festa del Perdono 7, 20142 Milan, Italy