Cobalt therapy, teletherapy machines using megavolt gamma rays emitted by cobalt-60, a radioisotope produced by irradiating ordinary cobalt metal in a reactor, revolutionized the field between the 1950s and the early 1980s.
A terapia de coblato, e as máquinas de teleterapia que usaban raios gamma de megavoltios emitidos polo cobalto-60, un radioisótopo producido irradiando o metal cobalto ordinario nun reactor, revolucionaron este campo entre as décadas de 1950 e inicios da de 1980.