Evaluation of a novel collimator for molecular breast tomosynthesis. David R. Gilland, 1 Benjamin L. Welch, 2 Seungjoon Lee, 3 Brian Kross, 3 Andrew G. Weisenberger 3 5 1 Department of Biomedical Engineering, University of Florida, Gainesville, FL 32611, U.S.A. 2 Dilon Technologies, Inc., Newport News, VA 23606, U.S.A. 3 Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, U.S.A. 10 Corresponding author: David Gilland Department of Biomedical Engineering University of Florida 15 P.O. Box 116131 Gainesville, FL 32611 352-273-0302 gilland@ufl.edu 20