Quality Management 2017

Beam Output Audit (BOA)

Clinical effect in 10% of beams with lowest and highest output

25

20

19-22%

15

%

10

5

7-8 %

0

underdosage loss of local control

overdosage exc ss mild to moderate complications

114 beams in 35 institutions

Bentzen, EJC, 36: 615, 2000

2