Fig. 7

Plan quality in terms of conformity index is plotted versus target shape complexity in terms of surface-area-to-volume radio (A) and number of hypoxic regions (B) for IMRT and CRT plans. Marker sizes correspond to the number of discrete hypoxic regions present for each case. Linear regression parameters are displayed. Values in parentheses (and dotted lines) correspond to an analysis including all 17 animals, while values without parentheses (solid lines) exclude case 17 which appeared to be an outlier.