TABLE VI.
Quantitative Measurement of SNR and CNR in Clinical Data
| Cases | Full dose | 50% dose | 25% dose | KWIA 50% 2 Rings | KWIA 50% 3 Rings | KWIA 25% 3 Rings | KWIA 25% 4 Rings |
|---|---|---|---|---|---|---|---|
| Mean(GM) | 52.2 | 52.3 | 52.8 | 52.3 | 52.3 | 52.7 | 52.8 |
| Mean(WM) | 40.3 | 41.0 | 41.0 | 41.0 | 41.0 | 41.3 | 41.4 |
| SD(GM) | 13.9 | 19.1 | 28.4 | 15.6 | 14.4 | 18.8 | 16.5 |
| SD(WM) | 16.8 | 23.2 | 31.0 | 18.4 | 17.2 | 20.6 | 18.5 |
| SNR(GM) | 3.8 | 2.7 | 1.9 | 3.4 | 3.6 | 2.8 | 3.2 |
| / | 71% | 50% | 89% | 95% | 74% | 84% | |
| SNR(WM) | 2.4 | 1.8 | 1.3 | 2.2 | 2.4 | 2.0 | 2.2 |
| / | 75% | 54% | 92% | 100% | 83% | 92% | |
| CNR | 0.6 | 0.4 | 0.3 | 0.5 | 0.5 | 0.4 | 0.5 |
| / | 67% | 50% | 83% | 83% | 67% | 83% |