W Zhou1*, I Shah2*, R Lamoureux3*, N Bunda-Randall4*, K McCullough5*, (1) University of Colorado Anschutz Medical Campus, Aurora, CO, (2) Colorado Assn in Medical Phys (CAMP), Denver, CO, (3) University of New Mexico Hospital, Albuquerque, NM, (4) Colorado Assn in Medical Phys (CAMP), Pueblo, CO, (5) Colorado Springs, CO