Table 1. Mean Euclidian distance between the measured vessel contours for the entire set of 168 blood vessels.

Mean Euclidean distance ± SD
Auto.—Expert 1	Auto.—Expert 2	Auto.—Expert 3
4.13 ± 1.97 pixel 20.44 ± 10.06 µm	4.01 ± 1.97 pixel 19.58 ± 9.76 µm	4.05 ± 1.74 pixel 20.05 ± 8.95 µm

Expert 1—Expert 2	Expert 1—Expert 3	Expert 2—Expert 3
3.85 ± 1.92 pixel 19.67 ± 9.63 µm	3.66 ± 1.73 pixel 18.06 ± 8.91 µm	3.72 ± 1.7 pixel 18.26 ± 8.48 µm