Table 1 Measurement results in the images of 100 kV, Sn140 kV, weighted-average 120 kV, and the optimal single energy level for CNR acquired from contrast-enhanced dual-source dual-energy CT in portal venous phase of acute necrotizing pancreatitis
n | CNR of pancreatic parenchyma-to-necrosis | SNR of pancreas | Image noise | Score of subjective diagnosis | |
|---|---|---|---|---|---|
100 kV | 48 | 5.18 ± 2.39 | 6.31 ± 2.77 | 18.78 ± 5.20 | 3.56 ± 0.50 |
Sn140 kV | 48 | 3.13 ± 1.35 | 4.27 ± 1.56 | 17.79 ± 4.63 | 3.00 ± 0.55 |
Weighted- average 120 kV | 48 | 5.69 ± 2.35 | 7.21 ± 2.69 | 13.28 ± 3.13 | 3.48 ± 0.55 |
The optimal single energy level for CNR | 48 | 9.99 ± 5.86 | 11.83 ± 6.30 | 9.31 ± 2.96 | 3.88 ± 0.33 |
F | 33.589 | 34.300 | 54.583 | 26.261 | |
P | 0.000 | 0.000 | 0.000 | 0.000 |