For over 30 years, HRSI has provided Authorized User (AU) classroom and laboratory training to physicians. HRSI’s training is recognized by the U.S. Nuclear Regulatory Commission (NRC) and fulfills the didactic training required by law. Our courses meet the 80 hour training requirements of the Certification Board of Nuclear Cardiology (CBNC), Certification Board of Nuclear Endocrinology (CBNE) and American Board of radiology (ABR) and can be supplemented by an additional 120 hours of training to satisfy New York’s requirements.