1. Department of Radiology, Neuroradiology Service, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065.
2. Department of Radiology, Molecular Imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York, NY.
3. Center for Neural Science, New York University, New York, NY.
4. Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY.
5. Medical Physics Department, Bambino Gesù Children's Hospital, Rome, Italy.
6. Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY.
7. Levich Institute and Physics Department, City College of New York, New York, NY.
8. Department of Neuroscience, Weill Cornell Medicine Graduate School of the Medical Sciences, New York, NY.
9. Department of Radiology, Weill Medical College of Cornell University, New York, NY.