Figure 4

Correlation of tumor volume determined by two different observers measured by caliper and microCT respectively. Tumor volumes measures by the two observers were plotted and correlations were evaluated by means of linear fitting and correlation coefficients (R2). Best line was y = 0.98x - 7.4 (R2 = 0.91) for caliper and y = 1.01x - 0.65 (R2 = 0.97) for microCT measurements.