Table 4 Scan time reduction factor and CR gain for different numbers of iterations (Vision with 440 × 440 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 | 1.79 | + 41% | + 72% | + 71% | + 40% | + 14% | + 9% |
4 | 1.34 | + 53% | + 81% | + 76% | + 43% | + 20% | + 14% |
5 | 0.95 | + 61% | + 85% | + 79% | + 44% | + 25% | + 17% |