SAD Observer A Observer B Mean difference
(95% CI) Limits of agreement r ρc (95% CI) * Bias
Umbilicus
231 ± 40
235 ± 36
−4 (−7.4; −0.5)
−22.5; 14.6
0.98
0.96 (0.94;0.99)
0.99
219 (154–311) 234 (175–306)
Left renal vein
238 ± 32
242 ± 31
−4.2 (−7.1; −1.2)
−19.9; 11.6
0.97
0.96 (0.93;0.99)
0.99
238 (163–294) 247 (170–295)
Inferior mesenteric artery
233 ± 34
243 ± 30
−10.1 (−14.3; −5.9)
−32.4; 12.2
0.94
0.89 (0.82;0.97)
0.95
223 (171–297) 247 (171–297)