1. Department of Diagnostic Radiology, Yale University School of Medicine, 333 Cedar Street, PO Box 208042, New Haven, CT 06520-8042, USA. .
2. Department of Diagnostic Radiology, Yale University School of Medicine, 333 Cedar Street, PO Box 208042, New Haven, CT 06520-8042, USA
3. Department of Medical Oncology, Yale University School of Medicine, 333 Cedar Street, WWW 221, New Haven, CT 06520-8028, USA
4. Yale Cancer Center, 333 Cedar Street, TMP 3, New Haven, CT 06520-8028, USA