Edited by Michael R. Kilbourn, PhD, is Professor Emeritus, Radiology, at the University of Michigan. He retired after 25 years of directing and expanding the University's PET Cyclotron and Radiochemistry program. Professor Kilbourn is the author of over 200 peer-reviewed scientific papers and 31 book chapters, and is the 2009 recipient of the Paul C. Aebersold Award for Outstanding Achievements in Basic Science Applied to Nuclear Medicine. Peter J. H. Scott, PhD, is Associate Professor, Radiology, and Director of the PET Center at the University of Michigan. His research focuses on developing new methods for radiolabeling bioactive molecules and the design and synthesis of new radiotracers for PET imaging. Professor Scott has published over 100 papers, 170 abstracts, and 30 book chapters, edited 4 books, and is listed as an inventor on multiple patents. In 2019 he received a Distinguished Investigator Award from the Academy for Radiology & Biomedical Imaging Research.