Table. 2:
Image quality measurements of DWIs reconstructed using the KLR-CS and conventional CS methods. PSNR and NMSE were calculated for each DWI using the full k-space data as the ground truth.
| AF | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
| KLR-CS | PSNR (dB) | 46.2±1.6 | 43.4±1.7 | 41.8±1.5 | 40.5±1.3 | 39.4±1.1 | 38.5±0.9 | 37.8±0.8 |
| NMSE (×10−12) | 4.8±3.0 | 9.1±5.8 | 13.1±7.9 | 17.1±9.1 | 21.4±9.7 | 25.9±9.6 | 30.4±9.2 | |
| Conv. CS | PSNR(dB) | 40.6±0.3 | 35.5±0.4 | 32.2±0.5 | 30.1±0.5 | 28.2±1.0 | 27.4±0.6 | 26.6±0.7 |
| NMSE (×10−12) | 15.8±3.5 | 50.5±8.3 | 106.3±14.5 | 173.0±28.2 | 245.8±43.6 | 322.4±69.5 | 392.2±100.5 | |