PET Scans (image) Columbia University Medical Center Share Print E-Mail Caption LEFT: "Negative" scan, without Alzheimer's disease pathology. RIGHT: "Positive" scan of patient eligible for Solanezumab clinical trial. Credit Columbia University Medical Center Usage Restrictions None Share Print E-Mail 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.