Table 2.
TKV measurement variation among three expert observers.
| Mean TKV (mL) | TKV Measurement Variation among Three Expert Observers | ||||||
|---|---|---|---|---|---|---|---|
| Sequence | Model * | Reader 1 (CZ) | Reader 2 (AS) | Reader 3 (HD) | Average (%Δ from Mean) ** |
Coefficient of Variation (%) |
Maximum Difference (%) |
| Axial T2 | 1910 | 1893 | 1905 | 1903 | 1900 (1.8%) | 0.7 [0.3–1.3] | 0.7 [0.3–1.4] |
| Coronal T2 | 1903 | 1880 | 1905 | 1909 | 1898 (1.7%) | 1.2 [0.7–2.2] | 1.3 [0.8–2.4] |
| Axial T1 | 1844 | 1853 | 1826 | 1824 | 1834 (−1.7%) | 0.9 [0.5–2.0] | 1.1 [0.6–2.2] |
| Axial SSFP | 1872 | 1870 | 1875 | 1880 | 1875 (0.5%) | 0.5 [0.2–1.2] | 0.5 [0.2–1.3] |
| Coronal SSFP | 1818 | 1819 | 1820 | 1822 | 1820 (−2.5%) | 0.6 [0.3–1.5] | 0.6 [0.3–1.6] |
| All sequences | 1869 | 1863 | 1866 | 1868 | 1866 (0.0%) | 0.8 [0.3–1.5] | 0.9 [0.4–1.7] |
* Model: the auto-segmentation algorithm; ** Average of the three readers and the percent difference from the mean of all sequences prior to outlier corrections.