C Geraghty1*, L Padilla2*, J Moore3*, H Xu4*, L Jones5*, B Hasson6*, (1) Anne Arundel Medical Center, Annapolis, MD, AF, (2) Virginia Commonwealth University, Richmond, VA, (3) Johns Hopkins University, Baltimore, MD, (4) University of Maryland School of Medicine, Potomac, MD, (5) Associates In Medical Physics, Baltimore, MD, (6) Anne Arundel Medical Center, Annapolis, MD