Dr. Hart’s groundbreaking work in the field of tuberculosis treatment saved countless lives and reshaped the landscape of public health. At a time when tuberculosis was one of the deadliest diseases, Dr. Hart advocated for and spearheaded the use of X-rays in early detection, a revolutionary approach that allowed for timely intervention. His commitment to scientific discovery and patient care went beyond the laboratory and clinic—he worked tirelessly to ensure that his innovations reached underserved communities, emphasizing equity in healthcare long before it became a widespread call to action.