Figure 3:

Bar chart showing average tumor volumes segmented from different MR imaging methods 3 and 10 days post implantation of the tumor. The 95% confidence interval is given by error bars. Statistical significance was analyzed using Wilcoxon rank sum test with p-values denoted by *** for $\mathrm{p}\le 0.001$, ** for $0.001\le \mathrm{p}\le 0.05$, * for $0.05\le \mathrm{p}\le 0.1$, and none for $0.1\le \mathrm{p}\le 1$