Safe Doses and Cancer Treatment Evaluation

The aim of this research is to check the efficacy of radiotherapy after execution that helps in preserving patients' rights against the randomized dose that settled statistically and assessed in standard models ignoring patient-specific factors. Based on studying a dose-response relationship, a mathematical model is presented describes the initial tumor energy (E0Tumor) prior therapy after treatment execution -even if it was not predetermined- by monitoring the tumor response along the treatment phases and compared to the applied dose energy (E0Dose). Our model allows mechanic risk predictions to be made at high radiotherapeutic doses as well as at low doses, besides to the second cancer risk prevention. Thus, the administered dose errors could be determined and consequently preserving patients' rights to evaluate the cancer treatment through the provided mathematical model. Reasons of tumor regrowth are either underestimation or overestimation of the administered dose; the safe dose of the successful treatment occurs only in the case of: E0Dose = E0Tumor, where tumor regrowth energy in such a case would be vanished. Dose assessment by ignoring patient-specific factors and using standard models is responsible for wide range of doses that lead to tumor regrowth and second cancer risks. Current approach suggests settling down a new protocol for the proper ranges of radionuclide doses based on a personalized staging system.