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DETECTORS FOR MEASUREMENT-2D/3D detectors
Issues with EBT2- multichannel film dosimetry
(film QA pro-software)
Rational
Use of the three colour channels.
Different response in the three channels
enables discrimination between dose related
and non-dose related signals
Advantages
Compensation for nonhomogeneity of dye
thickness
Increases signal to noise level
Mitigates lateral dose dependency of flat bed
22
Utretch 2016
scanners
Extends the dose range to 10cGy-100 Gy
Nearly energy independent response [50kV-
MV]
Remember that for 16 bits depth:
d=-log (PV/65535)
Where d is density and PV refers to pixel value
Micke et al. Med.Phys. 38 (2011)
Mendez et al. Med. Phys. 41 (2014)
Mendez, Med. Phys. 40(2013)