组别 | 血管CT值(HU) | CNR | SNR | 主观评分 |
50 keV | 537.50 ± 74.98 | 84.75 ± 20.37 | 75.69 ± 18.66 | 4.91 ± 0.29 |
60 keV | 386.33 ± 55.80 | 76.07 ± 20.08 | 65.46 ± 17.88 | 4.56 ± 0.71 |
70 keV | 281.41 ± 45.75 | 60.97 ± 19.22 | 49.78 ± 16.60 | 4.18 ± 0.84 |
120 kVp-like | 230.41 ± 40.73 | 57.38 ± 16.65 | 45.12 ± 13.53 | 4.13 ± 0.86 |
对照组 | 252.04 ± 45.16 | 53.47 ± 16.83 | 42.60 ± 14.66 | 4.15 ± 0.84 |
F | 304.345 | 27.846 | 41.695 | 11.527 |
P值 | <0.001 | <0.001 | <0.001 | <0.001 |