Table 1 Relative differences between estimated and simulated activities in a 9-mL sphere. The projections were simulated using a separate SIMIND simulation and then reconstructed using MCR (20 iterations)
From: Monte Carlo-based quantitative pinhole SPECT reconstruction using a ray-tracing back-projector
Offset (cm) | Air | Water | ||
|---|---|---|---|---|
x | y | z | Relative difference (%) | Relative difference (%) |
0 | 0 | 0 | 1.8 | 0.7 |
−2 | 0 | 0 | 2.0 | 0.8 |
2 | 0 | 0 | 2.1 | 0.8 |
0 | −2 | 0 | 1.8 | 0.5 |
0 | 2 | 0 | 1.7 | 0.7 |
0 | 0 | −2 | 2.1 | 0.8 |
0 | 0 | 2 | 1.7 | 0.4 |