Tables of equivalent dose in 2 Gy fractions: a simple application of the linear quadratic formula.
OBJECTIVE
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
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.


CONCLUSIONS
The tables offer a simple method of equating one fractionation regimen with another, recognizing the limitation of this method.
Division of Radiation Oncology, Westmead Hospital, NSW, Australia.
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Barton
D000368:Aged; D006258:Head and Neck Neoplasms / Q000532:radiotherapy; D006801:Humans; D008297:Male; D008433:Mathematics; D008962:Models, Theoretical; D011471:Prostatic Neoplasms / Q000532:radiotherapy; D011878:Radiotherapy / Q000379:methods*; D011879:Radiotherapy Dosage