1. Molecular Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
2. Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
3. Imaging Physics, SAIC Frederick, Inc., National Cancer Institute-Frederick, Frederick, Maryland
4. Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
5. Division of Computational Bioscience, Center for Information Technology, National Institutes of Health, Bethesda, Maryland
6. Philips Healthcare, Cleveland, Ohio
7. Biometric Research Branch, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, Maryland