Table 1. λ values of well and moderately differentiated and poorly differentiated gastric adenocarcinoma in arterial phase in different energy ranges.
| λ | WD and MD GA | PD GA | t | P |
|---|---|---|---|---|
| 40–50 keV | 4.0978±2.01483 | 4.6807±1.2686 | –1.378 | 0.171 |
| 40-60 keV | 3.3263±1.6202 | 3.7188±0.9935 | –1.172 | 0.246 |
| 40-70 keV | 2.69443±1.3323 | 3.0797±0.8343 | –1.389 | 0.17 |
| 40-80 keV | 2.3029±1.1202 | 2.5988±0.70188 | –1.268 | 0.21 |
| 40-90 keV | 1.9747±0.9617 | 2.231±0.6105 | –1.274 | 0.208 |
| 40-100 keV | 1.7206±0.8384 | 1.9413±0.5279 | –1.262 | 0.212 |
| 40-110 keV | 1.5227±0.7440 | 1.7313±0.4647 | –1.348 | 0.183 |
| 40-120 keV | 1.3582±0.6635 | 1.5521±0.4166 | –1.402 | 0.166 |
| 40-130 keV | 1.2378±0.5956 | 1.4007±0.3770 | –1.308 | 0.196 |
| 40-140 keV | 1.1175±0.5481 | 1.2736±0.3434 | –1.368 | 0.177 |
| 40-150 keV | 1.0115±0.5023 | 1.1542±0.3280 | –1.343 | 0.184 |
WD, well differentiated; MD, moderately differentiated; PD, poorly differentiated; GA, gastric adenocarcinoma; λ, the slope of energy spectrum curve.