What does WBV stand for?

On average, whole brain volume and both gray and white matter volumes decreased by 3%-10% in the first few months after severe TBI.

By calculating the ratio of the volume of the white matter hyperintensities to whole brain volume (the leukoaraiosis index), physicians may be able to identify Alzheimer's patients at higher risk of rapid progression or those who are unlikely to respond well to treatment, Mitali Bose, a graduate student at the University of Texas at Dallas and a coauthor, said in an interview.

Also, the exposure diminishes the volumes of midbrain (20%) and cerebellum (10%) as statistically significant, but only when the volumes are scaled with the whole brain volume.