Table 3 Quantitative assessment according to dose level on the pre-contrast image
SDCT | LDCT | ULDCT | p Value for pairwise comparison | |
|---|---|---|---|---|
SNR | 6.2 ± 1.5 | 5.1 ± 1.1 | 4.4 ± 1.1 | < 0.001+ SD versus LD, < 0.001 SD versus ULD, < 0.001 LD versus ULD, 0.002 |
CNR | 3.8 ± 2.2 | 3.1 ± 2.0 | 2.3 ± 1.7 | 0.012+ SD versus LD, 0.112 SD versus ULD, 0.001 LD versus ULD, 0.075 |