Figure 3

Comparison between measurements of the surgical incisions depth at contrast-enhanced ultrasound scans and in corresponding tissue sections. (a) The Bland-Altman difference plot (n = 10) indicates the correlation between measurements at angle contrast-enhanced US scans and gross pathology. The difference is plotted against mean value, and the 95% limits of agreement (mean bias ± 1.96 SD) of the difference between the two methods of measurement are shown, as is the regression line (red). (b) The angle contrast enhanced US scan and the corresponding tissue sections are reported. The hyperechoic line (white arrows heads) and the corresponding lesion in the transverse section of the dissected tendon (black arrows heads) are shown. Abb: US = ultrasound; SD = standard deviation.