He performs theoretical research in the field of imaging science. His recent research interests include: quantifying the quality of multimodality medical imaging systems using task-based measures of image quality, diffuse optical tomography, and theoretical image science. He has a BS in physics from Trinity University in San Antonio, Texas, and received his PhD in 2000 from the University of Chicago. He is the recipient of the 2007 Mark Tetalman Award given out by the Society of Nuclear Medicine and is a member of the OSA and SPIE.