Figure 2
Average response values for P + , P B and P I . Average values and standard deviation for the probability of uncomplicated tumour control, P+, the total probability of tumour control, PB, and the total probability of severe complications, PI. Sophisticated radiation treatment techniques have significantly increased the probability of total tumour control first due to the prescribed dose escalation and second due to the biological dose escalation obtained with IMRT2. The probability of complications was already significantly reduced with IFP compared with CONVT, but with IMRT a further significant decrease was obtained. The differences obtained for the treatment outcome and the probability of complications between IMRT1 and IMRT2 were not statistically significant.