Fig. 7.

White matter fiber tractography of a randomly chosen control subject (a) and a randomly chosen mTBI patient (b) by using the 41 discrepant DICCCOLs (yellow spheres) as seed points. Despite the negative findings on the mTBI patient's structural MRI, the patient's white matter structure shows significant differences in the 41 discrepant networks in comparison with controls. Of particular note, the differences in the major white matter tracts between the control and the patient are not because of the loss of white matter tracts in the patient; instead, it is that these discrepant networks fail the fiber tractography algorithm when using the selected DICCCOL landmark as seed regions. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)