Dose 2016

How does the uncertainty ( σ

) influence the

action limits?

Example with large uncertainty:

Prescribed dose

Probability distribution for the true dose

Dose (Gy)

Action limits go to zero when

TL

TL

−∆

+∆

dose measurement uncertainty increases

Clinical tolerance limits

From Jörgen Olofsson (Dose Modeling and dose verification ESTRO COURSE)