1 Elkan F. Halpern, PhD, is the Senior Biostatistician for Radiology. He is currently retired. He was the Chief Statistician for Massachusetts General Imaging from 1991 through 2016. Dr. Halpern was the Vice President of Consulting Statisticians, Intl (later, a division of PAREXEL). He developed the statistical model for ABC News Election Night Projections in 1980. He was on its Decision Desk for all elections in the 1980s.