[Use of the linear-square model for evaluation of the distribution of equivalent doses of electron irradiation].
The differences between physical absorbed dose of the electron radiation and normalized up to the total dose, fractionated by daily dose equal to 2 Gy, corresponding to "equivalent biologic dose isobio Gy 2" have been analysed. The effect of the fraction dose on the distribution of equivalent total dose in relation to the localization of the neoplastic tumor in the irradiated area has been assessed. On account of the calculations it has been found that alike as in the case of photon radiation the application of fractionated doses equal or lower than 2 Gy is more safe for healthy tissues as compared with higher fractionated doses. No distinct differences have been present between the distribution of physical and biological doses for isodoses below 80%. This fact suggests that the choice of the energy of electron radiation should be decided on account of the depth of the neoplastic tumor and the distribution of physical dose--whereas the distribution of biologic isodoses (isobio Gy 2) of electron radiation is of significant importance in the estimation of the tolerance of critical organs situated in the area between skin and the irradiated tumor.
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D003037:Cobalt Radioisotopes / Q000008:administration & dosage / Q000627:therapeutic use*; D004307:Dose-Response Relationship, Radiation; D004583:Electrons; D006801:Humans; D016014:Linear Models; D008954:Models, Biological; D009369:Neoplasms / Q000532:radiotherapy*; D011836:Radiation Tolerance; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy / Q000379:methods*
D003037:Cobalt Radioisotopes
Wykorzystanie modelu liniowo-kwadratowego dla oceny rozkładu dawek równowaznych promieniowania elektronowego.