1. Stanford University,Department of Radiology,Stanford,USA,CA 94305
2. Berkeley National Laboratory,Applied Nuclear Physics Program at Lawrence,Berkeley,USA,CA 94720
3. Shanghai Jiao Tong University,School of Biomedical Engineering,Shanghai,People's Republic of China
4. Seoul National University,Department of Nuclear Medicine and Biomedical Sciences,Seoul,South Korea,110-744
5. Stanford University,Molecular Imaging Program,Departments of Radiology, Bioengineering, Physics, and Electrical Engineering,Stanford,CA 94305