![](http://news.vumc.org/wp-content/uploads/SA-Disc-Lec-Pettigrew-SU07-copy-585x374.jpg)
Roderic Pettigrew, Ph.D., M.D., right, director of the National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health, poses for a photo with Vanderbilt’s John Gore, Ph.D., left, and André Churchwell, M.D., following his recent Flexner Discovery Lecture.