Research Article
Learned Shrinkage Approach for Low-Dose Reconstruction in Computed Tomography
Table 2
Quantitative measures corresponding to the image array in Figure
15. The SNR is measured in HU window of
.
| Noise level | FBP | PWLS | Shrinkage | SNR | SSIM | SNR | SSIM | SNR | SSIM |
| | 21.87 | 0.75 | 27.82 | 0.90 | 25.39 | 0.86 | | 26.53 | 0.86 | 28.97 | 0.91 | 29.88 | 0.92 | | 28.86 | 0.91 | 30.59 | 0.93 | 31.65 | 0.94 | | 30.67 | 0.93 | 32.62 | 0.95 | 32.43 | 0.95 | | 32.29 | 0.95 | 33.93 | 0.96 | 32.85 | 0.96 |
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