 Therac-25

The Therac-25 was a computer-controlled radiation therapy machine produced by Atomic Energy of Canada Limited (AECL) in 1982 after the Therac-6 and Therac-20 units (the earlier units had been produced in partnership with CGR of France).It was involved in at least six accidents between 1985 and 1987, in which patients were given massive overdoses of radiation.