Fig 1.

Segmentation of T1-weighted MR images into GM, WM, and CSF regions. Examples of T1-weighted MR images in sagittal (A, E) and coronal (C, G) planes are shown without and with color overlay of the tissue segmentation into GM (blue), WM (yellow), and CSF (red) from a control subject (top row) and a patient with IIH (bottom row). Relatively larger subarachnoid CSF spaces can be visualized in the floor of the anterior cranial fossa and in the extra-axial spaces overlying the convexities in IIH.