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Quantitative subjective scores in terms of five categories of the Ki-30 min images and the Ki-65 min images
| Categories | Ki-65 min images | Ki-30 min images | Z value | P value |
|---|---|---|---|---|
| Artifact reduction | 4.13 ± 0.48 | 4.11 ± 0.49 | -1.51 | 0.13 |
| Noise suppression | 3.81 ± 0.52 | 3.79 ± 0.52 | -1.52 | 0.13 |
| Contrast retention | 4.24 ± 0.58 | 4.21 ± 0.57 | -1.26 | 0.21 |
| Lesion discrimination | 4.38 ± 0.52 | 4.36 ± 0.53 | -0.78 | 0.44 |
| Overall image quality | 4.16 ± 0.53 | 4.14 ± 0.55 | -1.49 | 0.14 |
