1. From the Department of Radiology, Health Sciences Center, University of Colorado, Denver, Colorado;
2. Philips Medical Systems, MRI, St. Louis, Missouri; the
3. Departments of Radiology and
4. Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania; the5Department of Radiology, Gdansk Medical Academy, Gdansk, Poland; the
5. Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania; the
6. Department of Chemistry, Wellesley College, Wellesley, Massachusetts; and
7. Tufts-New England Medical Center, Boston, Massachusetts.
8. Ophthalmology and Pathology, Boston Medical Center, Boston, Massachusetts; the