AROI-ESTRO GYN Teaching Course

Calculation of EQD2 for HDR

EQD2: Absorbed doses that, when delivered with 2Gy per fraction, would produce the same biologic effect

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  2 d dn

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EQD

2

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• n: number of fractions • d: fractional dose • Tumor  / 10 • Late morbidity  / 3