IMT School for Advanced Studies Lucca 1 article published in JoVE Neuroscience Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study Giuseppe Delvecchio*1, Lucio Oldani*2, Gian Mario Mandolini2, Alessandro Pigoni3, Valentina Ciappolino2, Giandomenico Schiena2, Matteo Lazzaretti2, Elisabetta Caletti2, Viviana Barbieri1, Claudia Cinnante4, Fabio Triulzi1,4, Paolo Brambilla1,2 1Department of Pathophysiology and Transplantation, University of Milan, 2 This is a 3T magnetic resonance imaging study aiming to investigate grey matter volume differences between cannabis-induced psychosis patients and non-psychotic chronic cannabis users.