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Table 3 Calculated left and right kidney masses (g) based on AI (labelled with “AI”) and experts (labelled with “Ex”) segmentation on dataset 4

From: Automated and robust organ segmentation for 3D-based internal dose calculation

Mass/Patient 1 2 3 4 5 6 7 8 Avg.
L Kid Ex(g) 148 102 254 147 99 142 107 184  
R Kid Ex(g) 148 166 * 160 122 127 90 178  
L Kid AI(g) 169 93 243 125 95 138 102 188  
R Kid AI(g) 166 184 * 137 124 104 90 170  
L Kid Di(%) 14 (-) 9 (-) 4 (-)15 (-) 4 (-) 3 (-) 5 2  
R Kid Di(%) 12 11 * (-)14 2 (-)18 0 (-) 4  
Mean Di(%) 13 10 4 14.5 3 10.5 2.5 3 7.5
  1. The relative differences (labelled with “Di”), for left, right and average are shown in the last 3 rows. The segmentation is done on the contrast-enhanced CT taken prior to the radiopharmaceutical administration
  2. (-) and * represent mass underestimation by the AI and lack of organ in the patient, respectively