每日一词Diffuseaxonali

Diffuseaxonalinjury(DAI)isabraininjuryinwhichscatteredlesionsoccuroverawidespreadareainwhitemattertractsaswellasgreymatter.DAIistheresultoftraumaticshearingforcesthatoccurwhentheheadisrapidlyacceleratedordecelerated,asmayoccurincaraccidents,falls,andassaults.Besidesmechanicalbreakingoftheaxonalcytoskeleton,DAIpathologyalsoincludessecondaryphysiologicalchangessuchasinterruptedaxonaltransport,progressiveswellingsanddegeneration.LesionstypicallyexistinthewhitematterofbrainsinjuredbyDAI;theselesionsvaryinsizefromabout1–15mmandaredistributedinacharacteristicway.DAImost

转载请注明：http://www.iogko.com/wadzz/9917.html