“…This is the presumed site of the borderzone between the territories of the anterior and middle cerebral arteries (ACA and MCA). The internal borderzone is the white matter region surrounding the centrum semiovale (Bogousslavsky and Regli, 1986;Donnan et al, 2002;Naidich and Brightbill, 2003;Naidich et al, 2003aNaidich et al, , 2003bTorvik, 1984;Wodarz, 1980;Zulch and Hossmann, 1989).…”