Dr Saul Hertz

Abstract Dr Saul Hertz (1905–1950) conceived and brought from bench to bedside the medical uses of radioiodine. The early history of radioiodine has been compromised with inaccuracies. This article uses primary-source verification to put forth an evidence-based history of the origin of nuclear medicine. Hertz’s paradigm-changing work is a seminal medical discovery of the 20th century. Dr Hertz’s legacy continues to evolve.