Dr Divgi is former Director, Nuclear Medicine and PET and Vice-Chair, Research, Department of Radiology at Columbia University. After graduating from St. John’s Medical College in Bangalore, India, Chaitanya joined the Radiation Medicine Centre, Bhabha Atomic Research Centre, Bombay, where he obtained a Diploma in Radiation (Nuclear) Medicine. He joined the University of Pennsylvania as Chief of Nuclear Medicine and Clinical Molecular Imaging in May 2006, where he was awarded a NCRR high-end instrumentation grant for an isotope production cyclotron. Chaitanya joined Columbia University in 2011, where he has rejuvenated the PET/CT program and instituted a comprehensive University-wide IND centre that has successfully obtained approval for numerous agents used in neuroscience and oncology research. Chaitanya is involved in educational and policy initiatives, in particular, the successful integration of Diverse Investigational New Drug applications into one centre, under his supervision, that was responsible for all IND applications utilizing radiopharmaceuticals at Penn and Columbia.