Fig 4. MDCTA and MR images of a 29-year-old female patient (patient 7) presenting with headache and seizures. Transversal sections of MIP reformations of the MDCTA (A, D) demonstrate filling defects in the left transverse (arrowheads) and sigmoid sinuses (arrow). Axial PD-weighted (B) and coronal fluid-attenuated inversion recovery (FLAIR) images (C) depict hyperintense, thrombotic material in the left sigmoid sinus.

E, F, 2D time-of-flight MR venography shows no flow void in the left transverse and sigmoid sinuses.