title: Intraventricular hemorrhage on initial computed tomography as marker of diffuse axonal injury after traumatic brain injury.
abstract: Intraventricular hemorrhage (IVH) on initial computed tomography (CT) was reported to predict lesions of diffuse axonal injury (DAI) in the corpus callosum (CC) on subsequent magnetic resonance imaging (MRI). We aimed to examine the relationship between initial CT findings and DAI lesions detected on MRI as well as the relationship between the severity of IVH (IVH score) and severity of DAI (DAI staging). A consecutive 140 patients with traumatic brain injury (TBI) who underwent MRI within 30 days after onset were revisited. We reviewed their initial CT for the following six findings: Status of basal cistern, status of mid-line shift, epidural hematoma, IVH, subarachnoid hemorrhage, and volume of hemorrhagic mass and IVH score were assigned in each patient. Based on MRI findings, patients were divided into DAI and non-DAI groups and were assigned a DAI staging. Then, to confirm that the IVH on initial CT predicts DAI lesions on MRI, we used multi-variate analysis of the six CT findings, including IVH, and examined the relationship between IVH score and DAI staging. The IVH detected on CT was the only predictor of DAI (p=0.0139). The IVH score and DAI staging showed significant positive correlation (p<0.0003). IVH score in DAI stage 3 (with DAI involving the brain stem; p=0.0025) or stage 2 (with DAI involving CC; p=0.0042) was significantly higher than that of DAI stage 0 (no DAI lesions). In conclusion, IVH on initial CT is the only marker of DAI on subsequent MRI, specifically severe DAI (stage 2 or 3).
authors.affiliation: 1 Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine , Sendai, Japan .
authors.forename: Daddy
authors.initials: D
authors.lastname: Mata-Mbemba
authors.forename: Shunji
authors.initials: S
authors.lastname: Mugikura
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Nakagawa
authors.forename: Takaki
authors.initials: T
authors.lastname: Murata
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Kato
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Tatewaki
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Kei
authors.initials: K
authors.lastname: Takase
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Ishii
authors.forename: Shigeki
authors.initials: S
authors.lastname: Kushimoto
authors.forename: Teiji
authors.initials: T
authors.lastname: Tominaga
authors.forename: Shoki
authors.initials: S
authors.lastname: Takahashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001930:Brain Injuries / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D020202:Cerebral Hemorrhage, Traumatic / Q000000981:diagnostic imaging* / Q000473:pathology*; D002648:Child; D020833:Diffuse Axonal Injury / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D055815:Young Adult
keywords: computed tomography; corpus callosum; diffuse axonal injury; intraventricular hemorrhage; traumatic brain injury