CSF MRI (IMAGE) University of North Carolina Health Care Caption Extra-axial cerebrospinal fluid (EA-CSF) and perivascular space (PVS) segmentation on 24-month scan of a child who was diagnosed with autism. Credit Dea Garic & Mark Shen Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.