Table 1 Quantitative analysis
40 keV | 50 keV | 60 keV | 70 keV | 80 keV | PEI | |
|---|---|---|---|---|---|---|
Image noise (HU) | *23.8 ± 2.3 | *19.0 ± 2.2 | *16.1 ± 1.9 | 13.6 ± 1.7 | 12.8 ± 1.7 | 12.9 ± 1.6 |
Tumor contrast (HU) | *177.0 ± 62.2 | *117.6 ± 41.8 | *81.6 ± 29.5 | 56.5 ± 21.3 | 45. 7 ± 18.0 | 49.3 ± 19.6 |
CNR | ||||||
PDAC | *7.4 ± 2.6 | *6.2 ± 2.2 | *5.1 ± 1.9 | 4.2 ± 1.6 | 3.6 ± 1.4 | 3.8 ± 1.5 |
CA | *35.0 ± 8.9 | *28.9 ± 7.5 | *23.5 ± 5.8 | 19.4 ± 5.3 | 15.6 ± 4.0 | 17.3 ± 4.6 |
CHA | *31.1 ± 7.9 | *26.2 ± 6.8 | *21.1 ± 5.0 | 18.4 ± 4.5 | 14.6 ± 3.6 | 16.2 ± 4.4 |
SMA | *34.0 ± 9.0 | *28.3 ± 7.4 | *22.8 ± 5.6 | 19.3 ± 5.0 | 15.3 ± 3.9 | 16.9 ± 4.6 |
PV | *10.3 ± 4.5 | *8.5 ± 4.0 | *6.7 ± 3.1 | 5.9 ± 2.6 | 4.5 ± 2.2 | 5.3 ± 2.4 |
SMV | *9.4 ± 4.7 | *7.6 ± 3.8 | *6.1 ± 3.1 | 5.2 ± 2.6 | 3.9 ± 2.1 | 4.7 ± 2.6 |
SNR | ||||||
PDAC | 5.5 ± 3.2 | 5.2 ± 2.8 | 4.8 ± 2.4 | 4.7 ± 2.1 | 4.5 ± 1.9 | 4.9 ± 2.0 |
Pancreas | *12.9 ± 2.7 | *11.3 ± 2.5 | *9.9 ± 2.2 | 8.9 ± 1.9 | 8.0 ± 1.8 | 8.7 ± 1.6 |