fig 5.

A–E, Hypoplastic left transverse sinus (arrows) in a patient with a posterior fossa meningioma. Although it is difficult to distinguish hypoplasia from occlusion or thrombosis on the source and MIP images (A and B) of 2D-TOF MR venography (25/9/1, flip angle = 30°), the hypoplastic sinus is clearly depicted on the source and MIP images (C and D) of 3D contrast-enhanced MP-RAGE (13.5/7/1, TI = 300, flip angle = 15°), which are nearly identical to the DSA venogram (E). The pacchionian granulations (arrowheads) are also well delineated on 3D contrast-enhanced MP-RAGE images