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Tables of equivalent dose in 2 Gy fractions: a simple application of the linear quadratic formula
1Division of Radiation Oncology, Westmead Hospital, NSW, Australia.
Purpose:
To provide a simple method of showing the equivalent dose in 2 Gy fractions for various treatment regimens using the linear quadratic (LQ) formula.
Methods And Materials:
Tables of equivalent dose for common total doses and fraction sizes have been calculated using the LQ formula for representative alpha:beta ratios (1, 3, 10). Corrections have not been made for repopulation. Examples are given.
Conclusion:
The tables offer a simple method of equating one fractionation regimen with another, recognizing the limitation of this method.
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