S Balter1, D Fletcher2, H Kuan 3, D Miller 2,4 D Richter5, H Seissl5, T Shope6, (1) Lenox Hill Hospital, New York, NY, (2) Uniformed Services University of Health Sciences, Bethesda MD, (3) State University of New York, Stony Brook NY, (4) National Naval Medical Center, Bethesda MD (5) Siemens Medical Solutions, Forcheim Germany, (6) Center for Devices and Radiological Health, Rockville, MD