Percentage Error in Measured Ratio of Source Activities
| 220 Bq : 940 Bq | 55 Bq : 940 Bq | ||||||
|---|---|---|---|---|---|---|---|
| LLD (keV) | LLD (keV) | ||||||
| Reconstruction | Smoothed | 250 | 350 | 400 | 250 | 350 | 400 |
| 2D-FBP | No | 29.2 | −5.2 | 1.5 | 108.6 | 29.1 | −0.5 |
| 2D-FBP | Yes | 32.8 | 0.6 | 3.7 | 134.7 | 25.9 | 3.5 |
| 2D-OSEM | No | 27.1 | −10.9 | −4.4 | 111.8 | 11.0 | −22.3 |
| 2D-OSEM | Yes | 29.1 | −3.3 | −1.6 | 130.8 | 5.4 | −17.6 |