Dose Course 2018_Flipping book
Transmission chambers
“ Dolphin” (IBA)
David (PTW)
Delta 4 TD (Scandidos)
Multiwire i.c. nº of wires = nº leaf pairs
diode matrix 4040 diodes
Attenuation 5% (6MV) Measures dose-length product
1mm (disc shaped) 2.5 x 5 mm spacing Attenuation 1% (6MV) Sensitivity decrease: 0.04% per kGy
pp i.c. matrix 1513 i.c. 0.02 cm 3– 5mm center to center Attenuation 1% (6MV) Measures dose fluence MC modelling of detector reponse
Dose measurement accuracy 1.5%
MLC position accuracy 1mm
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