1. Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792-3252.
2. Madison Radiologists, S.C., Madison, WI.
3. Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI.
4. Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI.
5. Department of Emergency Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI.
6. Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI.