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Fig 3. A 22-year-old woman with a 6-day history of headache. Note the subtle abnormal signal intensity in the right transverse sinus on T2-weighting (A). The medial sinus is isointense (black arrow, A) and the lateral transverse sinus is hypointense (white arrow, A). The signal intensity on GRE sequences is very dark and enlarged compared with the size of the sinus on other sequences, consistent with susceptibility effect (arrows, B). On the postcontrast T1-weighted image, an isointense filling defect is noted consistent with thrombus (arrows, C).
A, FSE T2-weighted image.
B, GRE T2*-weighted image.
C, T1WI after the administration of contrast.
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