Physics Bucharest 2017
SSD
Diodes
Although an appropriate calibration factor N D is established for each beam energy, correction factors are required for a diode reading R diode :
pts.thickness
D
= R
· N
· C
· C pts.thikness
· C field
diode
diode
D
SSD size
field size
May be acceptable with no correction Meijer GJ, et.al. Int J Radiat Oncol Biol Phys . 49:1409-18, 2001.
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