Noise Comparison for Reconstructions with MLEM and Windowed FBP, When Images Are at Same Lesion Contrast
| Iteration no. for MLEM | k for windowed FBP | Normalized noise SD for MLEM image | Normalized noise SD for windowed FBP image |
| 5 | 3,800 | 0.0286 | 0.0277 |
| 10 | 8,200 | 0.0544 | 0.0530 |
| 15 | 12,000 | 0.0786 | 0.0711 |
| 20 | 17,000 | 0.1015 | 0.0904 |
| 25 | 22,000 | 0.1233 | 0.1058 |
| 30 | 28,000 | 0.1442 | 0.1205 |
| 35 | 33,000 | 0.1643 | 0.1303 |
| 40 | 38,000 | 0.1837 | 0.1384 |
| 45 | 43,000 | 0.2024 | 0.1452 |