FIG 2. Third ventricular CSF pulsation artifact in two subjects.

A and B, Contiguous FLAIR axial images of a 67-year-old man referred for dizziness. The patient has a grade 2 third ventricular VCSFA in the inferior aspect of the third ventricle (A) and a large third ventricle.

C, FLAIR axial image of a subject with third ventricular CSF pulsation artifact also has bilateral ghost pulsation artifacts in the phase-encoding axis (left to right), causing superimposition of hyperintensities on the bilateral adjacent brain. The most prominent ghost artifact (arrow) is in the left basal ganglia.