Multi Factorial (IMAGE) McGill University Caption The data included multiple modes of positron emission tomography (PET) and magnetic resonance imaging (MRI). Credit Yasser Iturria Medina 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.