Diffusion-Weighted MR Imaging of an Acute Venous Stroke: Case Report
Els Peetersa,
Tadeusz Stadnika,
Frédéric Bissaya,
Eric Schmeddinga and
Michel Osteauxa
a From the Departments of Radiology (E.P., T.S., M.O.) and Neurology (F.B., E.S.), University Hospital Vrije Universiteit Brussels, Belgium.
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FIG 1. Axial T2-weighted fast spin-echo MR image (5500/128/3) shows a moderate, mainly cortical hyperintensity in the left posterior parietal lobe (arrow)
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FIG 2. Axial FLAIR MR images (6000/105/2200).
A, Image shows a moderate, mainly cortical hyperintensity in the left posterior parietal lobe (arrow).
B, Follow-up image shows no abnormality.
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FIG 3. Axial diffusion-weighted echo-planar MR images (800/123) obtained with a z-sensitizing gradient.
A, Image shows a more pronounced, mainly cortical hyperintensity in the left posterior parietal lobe.
B, Follow-up image shows no abnormalities.
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FIG 4. Corresponding ADC maps.
A, Map shows a clear decrease in ADC values in the left posterior parietal lobe (hypointensity), compared with the contralateral side.
B, Follow-up map shows normalized ADC values in the left posterior parietal lobe, compared with the contralateral side.
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FIG 5. Axial contrast-enhanced T1-weighted spin-echo MR image shows abnormal cortical enhancement in the left posterior parietal lobe (arrow)
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FIG 6. Maximum intensity projection reconstruction of an MR venogram shows thrombosis in the anterior half of the superior sagittal sinus.
FIG 7. Conventional angiogram shows thrombosis in the anterior half of the superior sagittal sinus.
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AJNR - American Journal of Neuroradiology