Group A | Group B | |||||||
---|---|---|---|---|---|---|---|---|
Score | Score | |||||||
Phase | 140 kVp | 65 keV | 50 keV | 140 kVp | 65 keV | 50 keV | ||
Image contrast | Early arterial | Reader 1 | 3.1 ± 0.3 | 3.4 ± 0.4 | 3.9 ± 0.2* | 3.2 ± 0.4 | 3.4 ± 0.4 | 3.9 ± 0.2* |
Reader 2 | 3.3 ± 0.4 | 3.5 ± 0.5 | 3.8 ± 0.3* | 3.4 ± 0.5 | 3.5 ± 0.5 | 3.8 ± 0.3* | ||
Late arterial | Reader 1 | 3.3 ± 0.4 | 3.8 ± 0.3 | 3.9 ± 0.2 | 3.5 ± 0.5 | 3.9 ± 0.1 | 4.0 ± 0.0 | |
Reader 2 | 3.2 ± 0.5 | 3.8 ± 0.3 | 3.9 ± 0.2 | 3.5 ± 0.5 | 3.9 ± 0.2 | 4.0 ± 0.0 | ||
Portal venous | Reader 1 | 3.4 ± 0.5 | 3.8 ± 0.3 | 3.9 ± 0.1 | 3.4 ± 0.5 | 3.9 ± 0.1 | 3.9 ± 0.2 | |
Reader 2 | 3.3 ± 0.5 | 3.8 ± 0.3 | 4.0 ± 0.0 | 3.4 ± 0.4 | 3.8 ± 0.3 | 3.9 ± 0.1 | ||
Image noise | Early arterial | Reader 1 | 3.7 ± 0.4 | 3.5 ± 0.4 | 2.9 ± 0.5* | 3.7 ± 0.4 | 3.4 ± 0.5 | 2.9 ± 0.4* |
Reader 2 | 3.9 ± 0.2 | 3.8 ± 0.7 | 3.3 ± 0.6* | 3.9 ± 0.2 | 3.6 ± 0.5 | 3.3 ± 0.7 | ||
Late arterial | Reader 1 | 3.5 ± 0.5 | 3.2 ± 0.6 | 2.7 ± 0.7* | 3.6 ± 0.4 | 3.1 ± 0.7 | 2.8 ± 0.6 | |
Reader 2 | 4.0 ± 0.0 | 3.7 ± 0.8 | 3.4 ± 0.8 | 3.9 ± 0.2 | 3.8 ± 0.7 | 3.2 ± 0.9 | ||
Portal venous | Reader 1 | 3.4 ± 0.5 | 3.3 ± 0.6 | 3.2 ± 0.6 | 3.7 ± 0.4 | 3.3 ± 0.5 | 3.2 ± 0.4 | |
Reader 2 | 3.9 ± 0.2 | 3.6 ± 0.4 | 3.5 ± 0.5 | 4.0 ± 0.0 | 3.7 ± 0.4 | 3.5 ± 0.5 | ||
Overall image quality | Early arterial | Reader 1 | 3.7 ± 0.4 | 3.4 ± 0.4 | 3.0 ± 0.3* | 3.6 ± 0.4 | 3.5 ± 0.5 | 2.9 ± 0.3* |
Reader 2 | 3.4 ± 0.5 | 3.5 ± 0.4 | 3.2 ± 0.6 | 3.5 ± 0.5 | 3.2 ± 0.8 | 3.2 ± 0.8 | ||
Late arterial | Reader 1 | 3.2 ± 0.4 | 3.2 ± 0.6 | 2.9 ± 0.6* | 3.5 ± 0.5 | 3.2 ± 0.6 | 2.9 ± 0.6* | |
Reader 2 | 3.2 ± 0.5 | 3.6 ± 0.8 | 3.2 ± 0.6 | 3.5 ± 0.5 | 3.7 ± 0.7 | 3.2 ± 0.9 | ||
Portal venous | Reader 1 | 3.5 ± 0.5 | 3.5 ± 0.5 | 3.4 ± 0.5 | 3.7 ± 0.4 | 3.5 ± 0.5 | 3.4 ± 0.5 | |
Reader 2 | 3.3 ± 0.4 | 3.5 ± 0.5 | 3.5 ± 0.5 | 3.5 ± 0.5 | 3.7 ± 0.4 | 3.5 ± 0.5 |