Table 3.
Similarity metrics for kVCT, and sMVCT (CycleGAN) versus MVCT.
| kVCT | sMVCT (CycleGAN) | |
|---|---|---|
|
| ||
| MD soft tissue (HU) | 11 ± 117 | 2 ± 104 |
| MD bone (HU) | 327 ± 269 | 3 ± 160 |
| MAD soft tissue (HU) | 66 ± 97 | 61 ± 85 |
| MAD bone (HU) | 340 +252 | 97 ± 123 |
| RMSD soft tissue (HU) | 118 | 105 |
| RMSD bone (HU) | 270 | 160 |
| MD soft tissue (ρe) | −0.013 ± 0.097 (1.3%) | −0.0035 ± 0.098 (0.35%) |
| MD bone (ρe) | 0.044 ± 0.148 (2.9%) | 0.0020 ± 0.155 (0.13%) |
| MAD soft tissue (ρe) | 0.060 ± 0.080 | 0.057 ± 0.081 |
| MAD bone (ρe) | 0.096 ± 0.124 | 0.095 ± 0.119 |
| RMSD soft tissue (ρe) | 0.16 | 0.10 |
| RMSD bone (ρe) | 0.35 | 0.13 |
| MD soft tissue (SPR) | 0.018 ± 0.106 (1.8%) | 0.0024 ± 0.107 (0.24%) |
| MD bone (SPR) | 0.103 ± 0.158 (6.8%) | 0.0024 ± 0.166 (0.16%) |
| MAD soft tissue (SPR) | 0.063 ± 0.086 | 0.062 ± 0.087 |
| MAD bone (SPR) | 0.129 ± 0.137 | 0.106 ± 0.128 |
| RMSD soft tissue (SPR) | 0.11 | 0.11 |
| RMSD bone (SPR) | 0.16 | 0.16 |
| SNR vs MVCT SNR soft tissue (ratio) | 9.1 | 0.95 |
| SNR vs MVCT SNR bone (ratio) | 11.1 | 0.95 |
| SSIM | 0.856 | 0.862 |
| PSNR | 25.8 | 29.8 |