He received his Ph.D. in Medical Biophysics from the University of Toronto in 1990. His current research interests are in breast imaging, digital mammography, image quality assessment, and computer-aided diagnosis. He has published over 100 articles, several of which have won awards. He holds 6 patents. Dr. Nishikawa has served on a number of national committees including the AAPM Research Committee and the National Mammography Quality Assurance Advisory Committee of the FDA. He was won 16 awards including the Kurt Rossmann Award for Excellence in Teaching in the Graduate Programs in Medical Physics at the University of Chicago.