Physics Bucharest 2017

2004 - 2007

Major documented accidents in RT

approx. dates

patients affected

Country

probable cause

Mistake in drawing decay curves for 60 Co Error in dose tables 60 Co for treatment planning (varying overdoses) Mistake in calibration 60 Co beam (25% overdoses) Wrong repair (maintenance LINAC) Failure of communication

450 (300 died in 1y)

USA 1974-76

Germany 1986-87

86

United Kingdom

1988

207

Spain

1990

27

Error in the use of a treatment planning system (TPS) (5-30% underdoses)

United Kingdom

1982-91

1045