“Today, there is a lot of excitement around the potential for theranostics to change medicine, but some people forget that the practice of nuclear medicine, at its very beginning, provided both diagnostic and therapeutic value with the first widely available radiopharmaceutical Iodine131.
I131 was discovered by Dr. Glenn Seaborg and Dr. John Livingood in 1938 at UC Berkley. A few years later, in 1949, the rectilinear scanner was invented by Benedict Cassin and enabled direct imaging of the thyroid gland, and opened up the ability to “trace” the biodistribution of radioactive substances. This was the very beginning of targeted imaging, radiotracers, and radiotherapeutics. […]”