Table 2 –
Summary of N-way analysis of variance for iodine and gadolinium datasets for each CNR measure. P-values were adjusted using the Holm-Bonferroni correction.
| Iodine | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Image Type | Tube Voltage | Tube Current | Energy Threshold | Iodine Concentration | ||||||
| F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | |
| CNRlo | 28.46 | 0.00 | 4.23 | 0.08 | 1442.35 | 0.00 | 1.58 | 0.21 | 19773.02 | 0.00 |
| CNRhi | 0.81 | 0.37 | 27.00 | 0.00 | 126.03 | 0.00 | 2042.72 | 0.00 | 2914.65 | 0.00 |
| Covar-CNRlo | 3.45 | 0.08 | 4.30 | 0.08 | 8.14 | 0.01 | 61.64 | 0.00 | 38.89 | 0.00 |
| Covar-CNRhi | 5.48 | 0.02 | 12.74 | 0.01 | 13.63 | 0.01 | 17.77 | 0.00 | 17.87 | 0.00 |
| Gadolinium | ||||||||||
| Image Type | Tube Voltage | Tube Current | Energy Threshold | Gadolinium Concentration | ||||||
| F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | F-statistic | P-value | |
| CNRlo | 167.88 | 0.00 | 79.37 | 0.00 | 1614.31 | 0.00 | 42.96 | 0.77 | 17613.36 | 0.00 |
| CNRhi | 0.39 | 0.53 | 105.32 | 0.00 | 256.84 | 0.00 | 2908.91 | 0.00 | 3250.21 | 0.00 |
| Covar-CNRlo | 5.88 | 0.03 | 1.16 | 0.28 | 24.80 | 0.00 | 45.48 | 0.00 | 38.94 | 0.00 |
| Covar-CNRhi | 3.83 | 0.05 | 4.97 | 0.05 | 26.65 | 0.00 | 14.39 | 0.00 | 27.64 | 0.00 |