Rathan Subramaniam, M.D., Ph.D., M.P.H., FRANZCR, FACNM, is Professor of Radiology, Chief of the Nuclear Medicine Division, and Medical Director of the Cyclotron and Molecular Imaging Program at UT Southwestern. He also is affiliated with the Biomedical Engineering Program in the Graduate School of Biomedical Sciences. His clinical interests include molecular imaging in cancer.

I love delivering quality patient care, mentoring and building careers of young people and doing scientific research that will make a difference to patient management and health systems.

Dr. Subramaniam holds a medical degree (M.B.B.S.) from the Faculty of Medicine, University of Melbourne (Australia); a master’s degree in clinical education from the University of New South Wales (Sydney, Australia); a master’s degree in public health from the Harvard University; and a doctoral degree in radiology and anatomy from the University of Auckland (New Zealand). He completed his radiology residency training at Waikato Hospital (Hamilton, New Zealand), and then received advanced training in clinical trials of imaging through a fellowship program with the American College of Radiology Imaging Network, in magnetic resonance imaging (MRI) through a fellowship program at Canberra Hospital (Australia) and in nuclear radiology and neuroradiology through fellowship programs at Mayo Clinic College of Medicine.

Before becoming Chief of the Nuclear Medicine Division, Dr. Subramaniam was as an Associate Professor of Radiology and Radiological Sciences, with secondary faculty appointments in Oncology, Otolaryngology and Head and Neck Surgery, and Health Policy and Management at Johns Hopkins University, where he also served as the director of the PET/CT clinical center and the program director of PET/CT fellowships.

Dr. Subramaniam focuses his research on linking imaging biomarkers to patient quality of life and survival outcomes; quantitative imaging using positron emission tomography/computed tomography (PET/CT); single-photon emission computed tomography (SPECT/CT); and MRI for human translational oncologic imaging.

A career marked by service

Dr. Subramaniam serves as a consultant to the International Atomic Energy Agency’s Human Health Division and has also served on World Health Organization Advisory Experts Committee for the Priority Medical Devices for Cancer Management Project (Health Systems and Innovation Cluster). He is a fellow of the American College of Nuclear Medicine and the Royal Australian and New Zealand College of Radiologists, and a recipient of the Fulbright Travel Award and the Mayo Brothers Distinguished Fellowship Award. He is past president of the Radiology Research Alliance and the American College of Nuclear Medicine.

Dr. Subramaniam participates in numerous national and international societies, including his role as a member of the National Institutes of Health/National Cancer Institute steering committee for head and neck cancer. He is the vice chair of the American College of Radiology commission on nuclear medicine and molecular imaging, co chair of the Quantitative Imaging Biomarker Alliance's FDG PET biomarker committee, track chair for emerging technology refresher courses of the Radiological Society of North America, a member of the board of directors for the Association of University Radiologists, and a member of the board of directors for the Society of Nuclear Medicine and Molecular Imaging's PET Center of Excellence and Therapy Center of Excellence.

In addition to authoring more than 140 articles, five books and nine book chapters, Dr. Subramaniam conducts peer reviews for multiple academic journals, including the Journal of Nuclear Medicine, Radiology, Clinical Cancer Research, and the Journal of American College of Radiology, while also holding positions as administrative editor of Practical Reviews in Nuclear Medicine and a member of the editorial boards of the American Journal of Nuclear Medicine and Molecular Imaging, and American Journal of Roentgenology.

Personal note

Dr. Subramaniam is an avid badminton player who enjoys smooth jazz and classical music, and long walks.


Medical School
University of Melbourne (1997)
Western Hospital (1998), Transitional Year
Waikato Hospital (2005), Radiology
Canberra Hospital (2006), Musculoskeletal Radiology
Research Fellowship
American College of Radiology Imaging Network (2006), Clinical Research
Other Post Graduate Training
The University of New South Wales (2006)
Mayo School of Graduate Medical Education (2007), Nuclear Medicine
Mayo School of Graduate Medical Education (2008), Neuroradiology

Professional Associations/Affiliations

  • Alliance of Clinician Educators in Radiology - AUR
  • American Association of Advancement of Science
  • American College of Nuclear Medicine
  • American Medical Association
  • American Roentgen Ray Society
  • Association of University Radiologists
  • Fulbright Academy
  • Maryland Radiological Society
  • Massachusetts Medical Society
  • New Zealand Fulbright Alumni Association
  • Radiological Society of North America
  • Radiology Alliance for Health Services Research - AUR
  • Radiology Research Alliance - AUR
  • Royal Society of New Zealand
  • Society of Nuclear Medicine
  • World Molecular Imaging Society