MRI Ventricles Volume Dataset COURTESY www.volvis.org - Dirk Bartz, VCM, University of TŸbingen, Germany. DESCRIPTION 1.5T MRT 3D CISS dataset of a human head that highlights the CSF (Cerebro-Spinal-Fluid) filled cavities of the head. ALTERATIONS Downsampled to 64x64x64 by Cycling 74.