1. University of California, Beckman Laser Institute and Medical Clinic, Irvine, California
2. University of California, Department of Radiology, San Francisco, California
3. University of Pennsylvania, Department of Physics and Astronomy, Philadelphia, Pennsylvania
4. Massachusetts General Hospital, Harvard Medical School, Department of Radiology, Charlestown, Massac
5. Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire
6. Boston University, Department of Biomedical Engineering, Boston, Massachusetts
7. University of Texas MD Anderson Cancer Center, Department of Diagnostic Radiology, Houston, Texas