Karen L. Salzman, MD, FACR, is Professor of Radiology and Imaging Sciences and Neuroradiology Section Chief, as well as Leslie W. Davis Endowed Chair in Neuroradiology and Vice Chair of Education at the Spencer Fox Eccles School of Medicine with the University of Utah in Salt Lake City, Utah Miral D. Jhaveri, MD, MBA is a lead author of the prior editions of this book and lead author of Diagnostic Imaging: Brain. Jhaveri is a Colonel Robert R. McCormick Professor of Diagnostic Imaging, Division Head of Neuroradiology, and Chair of the Department of Diagnostic Radiology and Nuclear Medicine at Rush University Medical Center in Chicago, Illinois.