1. Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
2. Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
3. Department of Biochemistry and Molecular Biophysics, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
4. Université de Lorraine, CNRS, L2CM UMR 7053, F-54000 Nancy, France
5. Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
6. Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
7. Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States