Mean bladder EQD2 15, EQD2 25, EQD2 35, EQD2 50 for SIMRT and SIBIMRT techniques and for α/βoar values of 1, 2 (a) 3, 4 (b) and 6, 8 (c). The black and grey colours correspond to the lower and higher α/βoar values in each subfigure. For each EQD2 the p value is indicated in the graph. Mean bladder EQD2 for SIMRT and SIBIMRT techniques for α/βoar = 1, 2, 3, 4, 6 and 8 Gy.