Vancouver Coastal Health Research Institute scientist Dr. Robert Tarzwell’s research is creating a space for neuroimaging in psychiatry that has not existed until now. Two studies co-authored by Dr. Tarzwell that were published in 2015 have demonstrated the efficacy and accuracy of using brain scans – and more specifically, single-positron emission computed tomography (SPECT) functional neuroimaging – to help diagnose and ultimately better guide treatment for post-traumatic stress disorder (PTSD) and traumatic brain injury (TBI).