MRI of HD Brain (IMAGE) University of California - San Diego Caption Shown are MRI scans of a Huntington’s disease (HD) sufferer’s brain (left) and a normal brain (right). In the HD brain, many brain cells have died and fluid (black areas) has filled in those areas. In the normal brain, those same areas are occupied by brain cells. Credit UC San Diego School of Medicine Usage Restrictions Must use credit as indicated. License Licensed content 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.