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pro’s and con’s of semiconductor/diode dosimetry
- small dimensions (~ mm)
- little volume averaging
- suited for OF stereotactic fields
- reading immediately avaliable
- linear dose response
- PDDs in electron beams: R
dose (in
contrast to ionization chambers)
- suited for dose-rate measurement
- energy dependence, Si
over-response
for low photon energies
- temperature dependence (in-vivo)
- dose-rate dependent response (SSD)
- beam directional dependence
- single point
- radiation damage
gradual decrease
in response
pro’s
con’s