FIG 5. Venous stasis mimicking sinus thrombosis in a patient with systemic lupus erythematosus.

A, Axial fast fluid-attenuated inversion-recovery image (9000/110/2300/1 [TR/TE/TI/excitation]) shows high signal intensity in the left transverse sinus (arrowhead). Venous thrombosis is suspected.

B and C, Coronal 2D PC MR venograms. Although the left transverse and sigmoid sinuses are not visible on the regular-breathing image (B), these veins are clearly depicted on the breath-holding image (arrows in C). Venous occlusion is ruled out by MR venography with breath holding.