Shanmugasundaram Ganapathy-Kanniappan holds a Ph.D. degree from the University of Madras, India. In 2006, he joined the Department of Radiology, Johns Hopkins University School of Medicine, as a junior faculty member and was quickly promoted to assistant professor. Before joining the Johns Hopkins, he underwent postdoctoral training in premier institutes such as the National Institute of Immunology (NII, New Delhi, India) and the University of California at Los Angeles (UCLA). His current research interests include metabolic alteration in human pathophysiology and the identification of molecular targets for therapeutic intervention. He has published over 50 articles including original reports, invited reviews, editorials, book chapters, and books (https://www.ncbi.nlm.nih.gov/myncbi/1xKsymd-il85x/bibliography/public/). He is an inventor and coinventor of several patents and a recipient of prestigious fellowships and research awards including funding from private and federal sponsors. He is on the editorial board of peer-reviewed journals and currently serves the journal, Frontiers in Oncology as an associate editor for the section, Cancer Molecular Targets and Therapeutics.

• 1. Introduction.- 2. Tracer technique in basic research.- 3. Tracer technique in applied research.- 4. Literature cited

Shanmugasundaram Ganapathy-Kanniappan holds a Ph.D. degree from the University of Madras, India. In 2006, he joined the Department of Radiology, Johns Hopkins University School of Medicine, as a junior faculty member and was quickly promoted to assistant professor. Before joining the Johns Hopkins, he underwent postdoctoral training in premier institutes such as the National Institute of Immunology (NII, New Delhi, India) and the University of California at Los Angeles (UCLA). His current research interests include metabolic alteration in human pathophysiology and the identification of molecular targets for therapeutic intervention. He has published over 50 articles including original reports, invited reviews, editorials, book chapters, and books (https://www.ncbi.nlm.nih.gov/myncbi/1xKsymd-il85x/bibliography/public/). He is an inventor and coinventor of several patents and a recipient of prestigious fellowships and research awards including funding from private and federal sponsors. He is on the editorial board of peer-reviewed journals and currently serves the journal, Frontiers in Oncology as an associate editor for the section, Cancer Molecular Targets and Therapeutics.

• 1. Introduction.- 2. Tracer technique in basic research.- 3. Tracer technique in applied research.- 4. Literature cited

Shanmugasundaram Ganapathy-Kanniappan holds a Ph.D. degree from the University of Madras, India. In 2006, he joined the Department of Radiology, Johns Hopkins University School of Medicine, as a junior faculty member and was quickly promoted to assistant professor. Before joining the Johns Hopkins, he underwent postdoctoral training in premier institutes such as the National Institute of Immunology (NII, New Delhi, India) and the University of California at Los Angeles (UCLA). His current research interests include metabolic alteration in human pathophysiology and the identification of molecular targets for therapeutic intervention. He has published over 50 articles including original reports, invited reviews, editorials, book chapters, and books (https://www.ncbi.nlm.nih.gov/myncbi/1xKsymd-il85x/bibliography/public/). He is an inventor and coinventor of several patents and a recipient of prestigious fellowships and research awards including funding from private and federal sponsors. He is on the editorial board of peer-reviewed journals and currently serves the journal, Frontiers in Oncology as an associate editor for the section, Cancer Molecular Targets and Therapeutics.

• 1. Introduction.- 2. Tracer technique in basic research.- 3. Tracer technique in applied research.- 4. Literature cited