Parenchymal Abnormalities Associated with Cerebral Venous Sinus Thrombosis: Assessment with Diffusion-Weighted MR Imaging
Mark E. Mullinsa,
P. Ellen Granta,
Bing Wanga,
R. Gilberto Gonzaleza and
Pamela W. Schaefera
a Department of Radiology, Division of Neuroradiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
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FIG 1. Patient 12. A 43-year-old woman with headache, blurred vision, and mental status change.
A, T2-weighted axial MR image shows bilateral centrum semiovale hyperintense foci (arrows).
B, On axial echo-planar DW image, the lesions (arrows) are hyperintense.
C, On axial ADC map, the lesions (arrows) are hypointense.
D, Follow-up axial CT scan shows low-attenuation foci (arrows), corresponding to the abnormalities on initial MR images, that are consistent with infarct.
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FIG 2. Patient 9. A 31-year-old man with mental status changes and seizure activity.
A, T2-weighted axial MR image shows bilateral frontal and right parietal hyperintense foci (arrows).
B, On axial DW image, the lesions (arrows) are hyperintense.
C, On axial ADC map, the lesions (arrows) are hypointense.
D, Follow-up T2-weighted axial MR image shows no abnormality in the bilateral frontal and right parietal regions (arrows), consistent with interval resolution of the previous abnormalities.
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FIG 3. Patient 4. A 25-year-old woman with headache and left-sided weakness.
A, FLAIR axial MR image shows a right parietal T2 hyperintense focus (arrow).
B, On axial echo-planar DW image, the lesion (arrow) is slightly hyperintense.
C, On axial ADC map, the lesion (arrow) is hyperintense.
D, Follow-up FLAIR axial MR image shows no abnormality, consistent with interval resolution of the previous abnormality.
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FIG 4. Patient 5. A 24-year-old woman with headache and left-sided sensory loss.
A, T2-weighted axial MR image shows central (arrowhead) and peripheral (arrow) right thalamic T2 hyperintense foci.
B, On axil echo-planar DW image, the central lesion (arrowhead) is hyperintense and the peripheral lesion is isointense (arrow).
C, On axial ADC map, the lesions are hypointense (arrowhead) and hyperintense (arrow), respectively.
D, Follow-up CT scan shows central right thalamic infarct (arrowhead) and no abnormality in the peripheral region (arrow).
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AJNR - American Journal of Neuroradiology