Diffusion-tensor imaging implicates prefrontal axonal injury in executive function impairment following very mild traumatic brain injury - Lipton, M L; Gulko, E; Zimmerman, M E; Friedman, B W; Kim, M; Gellella, E; Gold, T; Shifteh, K; Ardekani, B A; Branch, C A (Radiology, 2009)