Case 1: Axial DWI through the maxillary sinus level demonstrates high signal intensity within the affected left maxillary sinus (black asterisk) compared.

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High-signal-intensity lesions on T2-weighted MR images

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Axial view MR images of the head, obtained at the time of second presentation.A, T1-weighted MR image (400/15) shows thickening of the dura overlying the.

A, A comminuted fracture of the posterior wall of the left maxillary sinus (arrow). A, A comminuted fracture of the posterior wall of the left maxillary.

A 45-year-old woman with a history of alcohol abuse had changes in consciousness and ocular abnormalities.A, No signal intensity alterations are seen on.

Coronal FLAIR images (A–C) document decreasing left hippocampal mass effect and signal intensity over 5-year period (black arrowhead). Coronal FLAIR images.

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Brain MR imaging 2 hours after onset of symptoms

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Persistent diffusion abnormalities in the brain stem of patient 2.

A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.

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Boxplot of each etiologic subgroup with the percentage ADC reduction of affected regions compared with NAWM. ATL from carbon monoxide (CO, a small subgroup.

Presentation transcript:

Case 1: Axial DWI through the maxillary sinus level demonstrates high signal intensity within the affected left maxillary sinus (black asterisk) compared with the unaffected right maxillary sinus, which does not demonstrate any signal intensity (white aster... Case 1: Axial DWI through the maxillary sinus level demonstrates high signal intensity within the affected left maxillary sinus (black asterisk) compared with the unaffected right maxillary sinus, which does not demonstrate any signal intensity (white asterisk). There is a corresponding reduction on the ADC sequence (not shown). S. Safder et al. AJNR Am J Neuroradiol 2010;31:771-774 ©2010 by American Society of Neuroradiology