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Step 1:
Determine the uncertainty (
σ
) for the dose measurement,
yielding the
probability distribution for the true dose
.
Dm + C /2
Dm - C /2
Action limits - Proposed philosophy
Dose (Gy)
C
α
Dose measurement
= Dm
α
α
Error probability = (1-CL)/2
(i.e. 2.5% when CL=95%)
Step 2:
Set a confidence level CL for the true dose, e.g.
CL =95%, and determine the corresponding dose interval C
α
.
From Jörgen Olofsson (Dose Modeling and dose verification ESTRO COURSE)