Brain MR images without gadolinium contrast enhancement. (A) In this FLAIR image from 1994, we see bilateral ventricular dilation with hyperintensities around ventricular cavities. (B) T2-weighted image taken 1 month after (A) and after placement of the ventriculo-atrial shunt. The ventricular cavities returned to normal. (C) T2-weighted image from 2005 showing dilation of the lateral ventricle in the left hemisphere and hyperintensities surrounding that ventricle. (D) T2-weighted image from 2009 showing normal-sized lateral ventricles and no changes to the cerebral parenchyma.