**The total 2 /two/ RPLD capsules per beam should be irradiated for the purpose of dosimetry audit.**

*The following recommendations should be taken into account:*


The absorbed dose to water Dw is calculated from the RPLD response registered by the RPLD reader according to the expression:

$$\mathbf{D} = \text{M.N.SCF.PCF.f}\_{\text{lin}}.\mathbf{f}\_{\text{fad}}.\mathbf{f}\_{\text{en}}.\mathbf{f}\_{\text{hol}},\tag{1}$$

*Different positions of the capsule with RPLD – inserting, capsule in the position and removing [25, 26].*

*Dosimetry Audit in Modern Radiotherapy DOI: http://dx.doi.org/10.5772/intechopen.100941*

where:

**M** [counts] – is the RPLD response, the mean of the readings from one dosimeter corrected for the ray readout position.

**N** [Gy/counts] – is the calibration coefficient of the RPLD system and is defined as the inverse of RPL response per unit dose to water; N is determined for 2 Gy delivery from Co-60 beam.

**SCF** – is individual sensitivity correction factor.

**PCF** – is the radiation position correction factor.

**flin** – is the non-linearity dose response correction factor.

**fen** - is the energy correction factor.

**ffad** – is the fading correction factor.

**fho**l – is the standard IAEA RPLD holder correction factor.

The determination of all these factors, their values, meitanence, quality assurance and combined uncertainty of the RPLD system are comprehensively given in [27].
