946 / 1359
PRIOR EBT GAFCHROMIC FILMS
[HD-810; MD-55-2; HS]
❑
Low sensitivity
❑
Small size
❑
Inherent optical density non-uniformity in one
sheet (15%)
[Need of double-exposure]
❑
High price
POST EBT GAFCHROMIC FILMS (2004)
[EBT;EBT2;EBT3]
❑
Dose range 2cGy – 8 Gy
❑
Saturation ~ 10Gy (15Gy)
❑
Different sizes available
❑
Z
eff
~ 7.05 (chlorine addition)
❑
Significant better homogeneity
[no need of double-exposure techniques]
❑
Lower price
Radiochromic film evolution…