Fig. 2From: Computed tomography volumetry of esophageal cancer - the role of semiautomatic assessmenta-d Bland-Altman plots for intraobserver and interobserver differences during tumor volume measurement using manual and semiautomatic segmentation. The difference of tumor volume is plotted against the mean. The dashed lines are calculated as ±1.96SD and show upper and lower limits of agreement. The dotted line shows the mean differenceBack to article page