FIG 3. Lateral ventricular CSF pulsation artifact in two subjects.

A and B, Contiguous FLAIR axial images of a 70-year-old man show focal lateral ventricular CSF pulsation artifacts bilaterally, more prominent on the right, in the region of the foramen of Monro (arrows).

C, A subject with lateral ventricular CSF pulsation artifact (open arrow) also has ghost pulsation artifacts in the phase-encoding axis (left to right), causing superimposition of hyperintensities on the bilateral adjacent brain parenchyma.