For my research, I’ve been spending time processing brain MRIs and measuring the volume of the brain and lateral ventricles. Here is an image of one of the brains (visualization by FSLView 3.0, with ventricles measured by ITK-Snap). The image is slightly messy because the brain did not extract perfectly (separating brain from non-brain). Also, portions of the ventricles are missing (especially the occipital and temporal horns) due to imperfect MRI resolution and processing. The ventricles are viewed through a cut-away of the 3D-rendered brain.
Note: You MAY NOT use this image without express written consent from me.