Figure 2.

Histogram of ${\text{iGTV}}_{4\text{D-CT}}$ as a percent of ${\text{iGTV}}_{\text{cine}}$ for each of the 4D-CT sorting methods. The PC-PB method had the largest average result, but also exhibited the largest range of values. The AB method resulted in the smallest average ${\text{iGTV}}_{4\text{D-CT}}$ as a percentage of ${\text{iGTV}}_{\text{cine}}$ for our patient population.