Mean Normalized 18F-FDG Activity
| Image reconstruction | Mean ± SD (%) | P |
|---|---|---|
| Segments with <50% 18F-FDG uptake (n = 30) | ||
| FBP-Pre | 35±8 | |
| FBP-Post | 39±9 | <0.001 |
| FBP-PostTIS | 38±9 | <0.001 |
| FBP-PostDP | 36±8 | NS |
| OSEM-Pre | 34±8 | <0.001 |
| Segments with 50%–75% 18F-FDG uptake (n = 48) | ||
| FBP-Pre | 63±7 | |
| FBP-Post | 67±8 | <0.001 |
| FBP-PostTIS | 65±7 | 0.002 |
| FBP-PostDP | 64±8 | NS |
| OSEM-Pre | 62±8 | 0.014 |
| Segments with >75% 18F-FDG uptake (n = 130) | ||
| FBP-Pre | 89±8 | |
| FBP-Post | 89±8 | NS |
| FBP-PostTIS | 89±8 | NS |
| FBP-PostDP | 89±8 | NS |
| OSEM-Pre | 88±8 | NS |
NS = not significant.
Differences in mean normalized 18F-FDG uptake between reconstruction methods and FBP-Pre as reference image.