Dose Course 2018_Flipping book

Radiochromic film evolution…

POST EBT GAFCHROMIC FILMS (2004) [EBT;EBT2;EBT3]

PRIOR EBT GAFCHROMIC FILMS [HD-810; MD-55-2; HS]

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Low sensitivity

Dose range 2cGy – 8 Gy

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Small size

Saturation ~ 10Gy (15Gy)

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❑ Inherent optical density non-uniformity in one sheet (15%) [Need of double-exposure]

Different sizes available

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Z eff ~ 7.05 (chlorine addition)

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Significant better homogeneity

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High price

[no need of double-exposure techniques]

Lower price

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