Table 1. Regression coefficients for relation of contrast-to-noise ratio to MAR, position and peak kilovoltage.
Reference (peripheral without MAR) | Regression coefficient (SE) | |
Level (kVp=70) | 19.03 (1.22) * | |
Slope | 0.34 (0.07) * | |
Factor | Effect | |
MAR | Change in level (kVp=70) | 7.12 (1.41) * |
Change in slope | 0.24 (0.10) *** | |
Central position | Change in level (kVp=70) | 3.44 (1.41) *** |
R2 | 0.89 |
MAR, metal artefact reduction; SE, standard error.
* p≤0.001.
** p≤0.01.
*** p≤0.05.