Table 5 Reduction factor and CR gain for different numbers of iterations (Vision with 220 × 220 matrix size) when compared to the reference values of mCT
Contrast recovery gain (%) | |||||||
|---|---|---|---|---|---|---|---|
Number of iterations | Mean reduction factor | 10-mm sphere | 13-mm sphere | 17-mm sphere | 22-mm sphere | 28-mm sphere | 37-mm sphere |
3 | 2.77 | + 15% | + 37% | + 40% | + 14% | + 1% | + 0% |
4 | 1.89 | + 24% | + 43% | + 44% | + 16% | + 7% | + 4% |
5 | 1.44 | + 30% | + 46% | + 46% | + 17% | + 10% | + 6% |