Atrial Fibrillation Study (IMAGE) Intermountain Medical Center Caption A new study of more than 10,000 patients treated long term with the blood thinner, warfarin, reveals higher rates of dementia for patients with atrial fibrillation versus non-AF patients Credit Intermountain Medical Center Usage Restrictions None 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.