Table 5.
Percentage variations of d’ relative to SECT 20 mGy AV-40 images
| Reconstruction | SECT | DECT | ||||
|---|---|---|---|---|---|---|
| 5 mGy | 10 mGy | 20 mGy | 5 mGy | 10 mGy | 20 mGy | |
| d’ (1.5 mm, 500 HU) | ||||||
| FBP | -56.21% | -39.33% | -15.72% | -55.02% | -41.03% | -23.44% |
| AV-40 | -47.28% | -27.39% | n/a | -50.07% | -32.82% | -10.36% |
| AV-100 | -27.92% | -1.78% | 29.80% | -36.81% | -11.73% | 16.19% |
| DLIR-L | -36.90% | -19.19% | 6.99% | -38.68% | -15.47% | 18.18% |
| DLIR-M | -26.63% | -8.85% | 17.78% | -29.72% | -1.11% | 39.57% |
| DLIR-H | -10.86% | 5.86% | 31.44% | -14.66% | 20.90% | 69.39% |
| d’ (25 mm, 120 HU) | ||||||
| FBP | -48.39% | -28.24% | -10.54% | -47.38% | -32.92% | -16.70% |
| AV-40 | -41.36% | -20.00% | n/a | -44.81% | -28.50% | -8.79% |
| AV-100 | -30.84% | -4.59% | 15.25% | -38.81% | -16.88% | 6.50% |
| DLIR-L | -33.79% | -13.91% | 3.74% | -35.64% | -14.70% | 12.79% |
| DLIR-M | -27.38% | -7.08% | 10.10% | -30.01% | -5.31% | 26.56% |
| DLIR-H | -18.65% | 3.20% | 17.72% | -21.92% | 7.75% | 41.85% |
SECT 20 mGy AV-40 images was considered as the standard radiation dose and representative reconstruction method for an adult abdomen with single-energy CT in clinical practice. Negative values indicated reduction and positive values indicated improvement