Fig 3. A, Flow gap is seen in the posterior aspect of superior sagittal sinus on the coronal 2D TOF MRV. This flow gap is artifactual as a result of in-plane saturation of the imaging plane. This effect is negated by changing the plane of imaging. B, On the axial 2D TOF MRV, there is flow in the superior sagittal sinus. There is short segment stenosis of the superior sagittal sinus on axial 2D TOF MRV, in the region of the convergence of lambdoid suture, possibly as a result of skull molding and pressure effect in the supine position.