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Calibration Process for DVS
•
A cumulative dose response calibration
curve is obtained for a specific lot by
irradiating a statistically significant
representative sample from the lot up to
80Gy
(
maximum dose range of the
dosimeter
).
Dose response curve
Verified by UW-ADCL (sample lot sent for testing)
❑
Calibration is valid for use with daily doses of 150-250 cGy
❑
Reported accuracy for each lot has a calibration certificate with values within:
❑
<5.5% (2σ) up to 20 Gy
❑
<6.5% (2σ) up to 74 Gy (accuracy decreases for doses > 74 Gy).
Lot Dose Response - RADFET Radiation Sensitivity
0.2
0.25
0.3
0.35
0.4
0.45
0.5
201 1004 2008
3008 4009 5011 6018 7026 8036
Cumulat ive Dose ( cGy)
Radiation Sensitivity
(mV/cGy)
Joanna Cygler, MOSFET dosimetry, AAPM Summer School, 2009