Influence of Criterion and Normalization Model on Gray-Level Normalization Parameters
| Method | α Variations (%) (mean ± SD) | β Variations (%) (mean ± SD) |
|---|---|---|
| Mean, Med, Lin-1, DSC-1 vs. each other | ≤1 | — |
| Max vs. other 1-parameter methods | 6 ± 6 | — |
| Lin-2 vs. DSC-2 | 4 ± 5 | 2 ± 1 |
| Lin-1 vs. Lin-2 | 11 ± 9 | 6 ± 3 |
| DSC-1 vs. DSC-2 | 9 ± 11 | 5 ± 5 |
Statistics were calculated within patient population from absolute value of α and β discrepancies observed between pairs of methods.