Fig. 2.

Representative K^trans maps of groups 1–4 before dosing (day 0) or 3 days posttherapy (day3) in the a whole tumor region or b peripheral tumor region with a constant scale (from 0 to 0.07 min⁻¹). c, d K^trans changes of the four groups during 3 days posttherapy in the c whole tumor region or d peripheral tumor region. Different Greek letters present statistical differences among the groups during 3 days.