Fractional Anisotropy Results (IMAGE) Radiological Society of North America Caption Axial (left six columns) and sagittal (right column) MR images of fractional anisotropy results in patients with Alzheimer disease variants relative to matched healthy control subjects. Credit Radiological Society of North America Usage Restrictions May use with credit 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.