Figure 2: Dose-response curves for FLT uptake parameters, CTN changes, Ki67 LI in irradiated daily and every second group.

In order to balance the four curves in the same figure, the ratio of CTN/10 was used to replace CTN (in HU) and the KI67 LI was expressed in decimal point format. (A) In irradiated daily group, both FLT uptake (SUVmax, SUVmean, T/NT ratio) and CTN increases were observed after 6 times of irradiation. (B) In irradiated every second day group, FLT uptake and CTN increased significantly after irradiation of 6Gy/3f compared with non-irradiated tumors.