[en] Objective: To evaluate in the last twenty years the remuneration model of Brazilian health system for the radiotherapy trying to demonstrate that the current model does not take into consideration relevant variables to adequate and improve it. Methods: This observational study included the collected data of the budget and the number of radiotherapy procedures performed between 1995-2015 by the Ministry of Brazilian health. The model was tested to detected any relationship with the cancer incidence and inflation. The variables were tested for a linear, cubic, exponential and logarithmic relationship. To measure the power of the association between the variables the R-square was calculated with an R value > 0.75 and a p-value < 0.05 considered significant. Results: A linear increase as in the number of procedures (R=0.94 e p<0.05) as in the total of radiotherapy budget (R= 0.82 e p<0.05) was detected in the last 20 years. Since 1995, it has occurred an increase of the spending for the Ministry of Brazilian health with the number of RT procedures. In the last twenty years, the number of RT procedures and the RT budget increased around 4.5 and 7.5 times. Except in 2010, in all other years, the budget was increased in the total value and no in the unit value of the procedure. There was not any relationship between the cancer incidence (p>0.05) or inflation (p>0.05) with the increased spending. There was a deficit of R$ 90 million corrected by the accumulated inflation in 5 years and about R$ 350 million in 20 years. Conclusion: In the last 20 year, the ministry of health increased as the quantity of RT procedures as the budget for the RT. The spending with RT was constant and linear during the period. However, the model does not attend the needs of Brazilian's population, because this model does not take into consideration the cancer incidence, inflation and also because the increase in the value does not give in the RT procedure. (author)

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