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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…