Dr Srivastava has been the Senior Medical Scientist and Head of Medical Isotope Research and Production Program at Brookhaven National Laboratory for over three decades.  He also served as Research Professor of Radiology at the Stony Brook University Medical Center.  Suresh has held many senior positions at numerous national and international nuclear medicine societies, and has been the original developer of many Tc-99m radiopharmaceuticals.  He also has been instrumental in conceiving, developing, and promoting the concept of dual-purpose theranostic radiopharmaceuticals including those based on the radioisotope tin-117m.