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AJNR - American Journal of Neuroradiology

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MR Imaging, Single-photon Emission CT, and Neurocognitive Performance after Mild Traumatic Brain Injury

Paul A.M. Hofman^,a, Sven Z. Stapert^a, Marinus J.P.G. van Kroonenburgh^a, Jelle Jolles^a, Jelle de Kruijk^a and Jan T. Wilmink^a

^a From the Departments of Radiology (P.A.M.H., J.T.W.), Nuclear Medicine (M.J.P.G.v.K.), and Neurology (J.d.K.), University Hospital Maastricht; the Departments of Neurocognition (S.Z.S.) and Neuropsychology and Psychiatry (J.J.) and the Institute of Brain and Behavior (P.A.M.H.,J.J.,J.T.W.), Maastricht University, The Netherlands.

View larger version (116K): [in a new window]   FIG 1. A and B, FLAIR images of a 36-year-old man who fell from a bicycle. Contusions are seen in the left temporal lobe as well as in the left frontal lobe. Note also the right frontal extracerebral hemorrhage

View larger version (79K): [in a new window]   FIG 2. Images obtained from a 23-year-old man who was involved in a car accident. A, SPECT image shows a left frontal perfusion deficit. B, FLAIR image shows no lesions at this location. C, Owing to diffuse axonal injury, T2*-weighted image shows two deep hemorrhagic lesions.

View larger version (109K): [in a new window]   FIG 3. Images obtained from a 37-year-old bicyclist. A, SPECT image shows a right frontal perfusion deficit. B, Corresponding FLAIR image shows a hemorrhagic contusion.

View larger version (15K): [in a new window]   FIG 4. Combined z scores of the patients with normal () and abnormal (•) MR findings over the 6-month follow-up period