Diffusion tensor and functional magnetic resonance imaging of diffuse axonal injury and resulting language impairment.
Diffuse axonal injury (DAI) is a common aftermath of brain trauma. The diagnosis of DAI is often difficult using conventional magnetic resonance imaging (MRI). We report a diffusion tensor imaging (DTI) study of a patient who sustained DAI presenting with language impairment. Fractional anisotropy (FA) and DTI tractography revealed a reduction of white matter integrity in the left frontal and medial temporal areas. White matter damage identified by DTI was correlated with the patient's language impairment as assessed by functional MRI (fMRI) and a neuropsychological exam. The findings demonstrate the utility of DTI for identifying white matter changes secondary to traumatic brain injury (TBI).
Mao
Hui
H
Department of Radiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA. hmao@emory.edu
Polensek
Sharon H
SH
Goldstein
Felicia C
FC
Holder
Chad A
CA
Ni
Chunchun
C
D000063:Accidents, Traffic; D016880:Anisotropy; D003937:Diagnosis, Differential; D020833:Diffuse Axonal Injury / Q000175:diagnosis* / Q000209:etiology; D038524:Diffusion Magnetic Resonance Imaging; D005260:Female; D006801:Humans; D007806:Language Disorders / Q000209:etiology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged