Table 3.
(A) Model accuracy on external validation (n = 30), median (interquartile range). (B) Model accuracy on prospective validation (n = 30), median (IQR).
| (A) | ||||
|---|---|---|---|---|
| External Test Set | Right Kidney | Left Kidney | Liver | Spleen |
| Model volume (mL) Corrected model volume (mL) |
617 (327–1009) 608 (316–1041) |
582 (416–1289) 582 (365–1285) |
1706 (1292–2087) 1684 (1287–2076) |
220 (145–274) 222 (157–280) |
| DSC | 0.96 | 0.98 | 0.97 | 0.96 |
| Concordance Coefficient | >0.99 | >0.99 | 0.98 | 0.99 |
| RMS error (mL) | 42 | 39 | 258 | 17 |
| Average % error | 7% | 3% | 3% | 1% |
| Number with zero error | 5 (17%) | 6 (20%) | 1 (3%) | 7 (23%) |
| (B) | ||||
| Prospective Test Set | Right Kidney | Left Kidney | Liver | Spleen |
| Model volume (mL) Corrected model volume (mL) |
625 (370–1000) 650 (394–998) |
729 (481–1039) 768 (485–1043) |
1711 (1489–2065) 1727 (1495–2051) |
244 (177–315) 241 (175–318) |
| DSC | 0.96 | 0.96 | 0.96 | 0.95 |
| Concordance Coefficient | >0.99 | >0.99 | >0.99 | 0.98 |
| RMS error (mL) | 112 | 65 | 112 | 37 |
| Average % error | 6% | 5% | 5% | 1% |
| # with zero error | 2 (7%) | 3 (20%) | 2 (7%) | 2 (7%) |