Dr. Petrella is Professor of Radiology, Senior Fellow in the Center for the Study of Aging and Human Development, and Director of the Alzheimer's Imaging Research Laboratory at Duke. He also serves as core faculty in the Duke-UNC Brain Imaging and Analysis Center and Duke Medical Physics Graduate Program. His work for the past 20 years has focused on applications of imaging and other biomarkers to studies of aging, mild cognitive impairment (MCI) and Alzheimer's disease. He has received over 2 million dollars in grant funding from private foundations, government and industry, including the Radiological Society of North America and the National Institutes of Health as principle investigator. His studies have contributed to the development of fMRI biomarkers for MCI and aided understanding of the structural and functional underpinnings of cognitive impairment in early Alzheimer's disease. His study evaluating the relationship between amyloid protein deposition and the Alzheimer's structural connectome was selected as the winner of the 2015 Alexander R. Margulis Award for Scientific Excellence from the RSNA. Dr. Petrella is Past President of the American Society of Functional Neuroradiology and co-chair of Quantitative Imaging Biomarker Alliance fMRI subcommittee. He has lead national efforts to develop new fMRI tools, and standardize acquisition and analyses techniques. He is the lead author of the first study to examine the effectiveness of fMRI for pre-surgical planning in brain tumor patients. This study was used by the Center for Medicare and Medicaid as evidence for approving reimbursement for fMRI.