Table 2. λ values of well and moderately differentiated and poorly differentiated gastric adenocarcinoma in venous phase in different energy ranges.
| λ | WD and MD GA | PD GA | t | P |
|---|---|---|---|---|
| 40–50 keV | 7.466±1.9516 | 8.9568±2.2822 | –2.658 | 0.01 |
| 40–60 keV | 5.9964±1.5829 | 7.1988±1.8393 | –2.655 | 0.01 |
| 40–70 keV | 4.900±1.3037 | 5.6482±1.6540 | –1.889 | 0.064 |
| 40–80 keV | 4.1523±1.0860 | 4.9932±1.2838 | –2.675 | 0.01 |
| 40–90 keV | 3.5598±0.9392 | 4.1900±1.1579 | –2.34 | 0.023 |
| 40–100 keV | 3.1077±0.8229 | 3.7401±0.9581 | –2.682 | 0.009 |
| 40–110 keV | 2.7370±0.7368 | 3.1490±0.9494 | –1.905 | 0.062 |
| 40–120 keV | 2.4587±0.6541 | 3.0527±0.8234 | –3.006 | 0.004 |
| 40–130 keV | 2.2281±0.6046 | 2.6726±0.6860 | –2.61 | 0.011 |
| 40–140 keV | 2.0236±0.5393 | 2.3792±0.6439 | –2.263 | 0.027 |
| 40–150 keV | 1.8364±0.5055 | 2.2391±0.5824 | –2.8 | 0.007 |
WD, well differentiated; MD, moderately differentiated; PD, poorly differentiated; GA, gastric adenocarcinoma; λ, the slope of energy spectrum curve.