TABLE 5.
Quantitative evaluations of the reconstructed AC SPECT images of the 150 testing patient studies.
| Testing Groups | NMSE (×10−2) | NMAE (×10−2) | SSIM | PSNR | P-valuea |
|---|---|---|---|---|---|
| Sparse-View Baseline | 1.53 ± 0.72 | 9.84 ± 1.98 | 0.9966 ± 0.0011 | 41.16 ± 2.91 | – |
| CUSIP | 2.50 ± 1.03 | 12.99 ± 1.92 | 0.9938 ± 0.0013 | 38.89 ± 2.01 | – |
| CUSIP-DuRDN | 1.68 ± 0.86 | 10.20 ± 1.98 | 0.9958 ± 0.0014 | 40.72 ± 2.24 | < 0.001* |
| Direct Img2Img | 1.37 ± 0.80 | 9.02 ± 2.03 | 0.9967 ± 0.0012 | 41.71 ± 2.20 | 0.090 |
| Direct Sino2Sino | 1.28 ± 0.48 | 8.99 ± 1.61 | 0.9969 ± 0.0011 | 41.81 ± 2.41 | < 0.001* |
| DuDoSS (proposed) | 1.16 ± 0.71 | 8.30 ± 1.79 | 0.9973 ± 0.0011 | 42.43 ± 2.50 | < 0.001* |
a
Two-tailed paired t-test of NMSE between the current and previous group in the table.
*
Refers to significant difference with a significance level of 0.05.