Table 3.
Posterior probabilities as calculated using the Bayesian hierarchical model for simulation of nonenhancing lesions.
| GSI protocol used | Small phantom | Medium phantom | GSI protocol used | Large phantom | |||
|---|---|---|---|---|---|---|---|
| 95% CrIa for difference | Posterior probability | 95% CrI for difference | Posterior probability | 95% CrI for difference | Posterior probability | ||
| 10 | (−1.5, 2.4) | 0.564 | (−2.1, 1.8) | 0.502 | 10 | (−10.2, 1.0) | 0.238 |
| 11 | (−1.3, 2.4) | 0.555 | (−1.8, 2.2) | 0.515 | 12 | (−10.0, 1.0) | 0.250 |
| 16 | (−1.4, 2.7) | 0.560 | (−1.3, 3.0) | 0.560 | 22 | (−11.1, 0.9) | 0.226 |
| 29 | (−1.6, 2.1) | 0.524 | (−1.6, 2.4) | 0.531 | 36 | (−8.9, 1.4) | 0.273 |
| σProtocol b | (0.029, 2.4) | (0.029, 2.6) | (0.037, 7.3) | ||||
Abbreviation: GSI, gemstone spectral imaging.
a
CrI = credible interval for difference in measured computed tomography number between virtual unenhanced and true unenhanced imaging.
b
Represents the total random error used as input to Bayesian hierarchical model.