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Fig 5. A 20-year-old woman with 2-day history of severe headache. Thrombosis of the superior sagittal sinus and multiple cortical veins is present. Note the prominent hypointensity of the thrombosed superior sagittal sinus and cortical veins in B (arrows), much larger than the thrombosed venous structures on other sequences (A and C, arrows). Graded as 3+ susceptibility effect. Signal intensity of the thrombosed segments is hypointense on T2WI and isointense on T1WI. Note the normal parietal cortical vein on the left (arrowheads).
A, FSE T2-weighted image.
B, GRE T2*-weighted image.
C, T1WI after the administration of contrast.
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