PMID- 24392843 OWN - NLM STAT- MEDLINE DCOM- 20141231 LR - 20211021 IS - 1557-9042 (Electronic) IS - 0897-7151 (Print) IS - 0897-7151 (Linking) VI - 31 IP - 10 DP - 2014 May 15 TI - Diffusion tensor imaging reveals white matter injury in a rat model of repetitive blast-induced traumatic brain injury. PG - 938-50 LID - 10.1089/neu.2013.3144 [doi] AB - Blast-induced traumatic brain injury (bTBI) is one of the most common combat-related injuries seen in U.S. military personnel, yet relatively little is known about the underlying mechanisms of injury. In particular, the effects of the primary blast pressure wave are poorly understood. Animal models have proven invaluable for the study of primary bTBI, because it rarely occurs in isolation in human subjects. Even less is known about the effects of repeated primary blast wave exposure, but existing data suggest cumulative increases in brain damage with a second blast. MRI and, in particular, diffusion tensor imaging (DTI), have become important tools for assessing bTBI in both clinical and preclinical settings. Computational statistical methods such as voxelwise analysis have shown promise in localizing and quantifying bTBI throughout the brain. In this study, we use voxelwise analysis of DTI to quantify white matter injury in a rat model of repetitive primary blast exposure. Our results show a significant increase in microstructural damage with a second blast exposure, suggesting that primary bTBI may sensitize the brain to subsequent injury. FAU - Calabrese, Evan AU - Calabrese E AD - 1 Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center , Durham, North Carolina. FAU - Du, Fu AU - Du F FAU - Garman, Robert H AU - Garman RH FAU - Johnson, G Allan AU - Johnson GA FAU - Riccio, Cory AU - Riccio C FAU - Tong, Lawrence C AU - Tong LC FAU - Long, Joseph B AU - Long JB LA - eng GR - P41 EB015897/EB/NIBIB NIH HHS/United States GR - T32 GM007171/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20140327 PL - United States TA - J Neurotrauma JT - Journal of neurotrauma JID - 8811626 SB - IM MH - Animals MH - Blast Injuries/*pathology MH - Brain Injuries/*pathology MH - Diffusion Tensor Imaging MH - Disease Models, Animal MH - Image Interpretation, Computer-Assisted MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - White Matter/*pathology PMC - PMC4012630 EDAT- 2014/01/08 06:00 MHDA- 2015/01/01 06:00 PMCR- 2015/05/15 CRDT- 2014/01/08 06:00 PHST- 2014/01/08 06:00 [entrez] PHST- 2014/01/08 06:00 [pubmed] PHST- 2015/01/01 06:00 [medline] PHST- 2015/05/15 00:00 [pmc-release] AID - 10.1089/neu.2013.3144 [pii] AID - 10.1089/neu.2013.3144 [doi] PST - ppublish SO - J Neurotrauma. 2014 May 15;31(10):938-50. doi: 10.1089/neu.2013.3144. Epub 2014 Mar 27.