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Minimise energy/field size dependence

An

approximation to account

for the influence of spectral changes between the 10cm

10cm and a smaller field (e.g. 4cm

4cm) on detector response would be to

cross-calibrate

the small detector against a medium size detector in an intermediate field

(smaller than the

reference field of 10cm × 10cm);

This is referred to as ‘

daisy-chaining’

by Dietrich & Sherouse MedPhys 38(7), 2011

 

 

 

ref

IC

IC

diode

diode

AM

AM

A M

A M

AS

int

int

cp

Small fields: relative dosimetry in practice