Comparison of Quantitative Values in Pathologic Uptake
| Site | n | Mean value (kBq/mL) | Maximum value (kBq/mL) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CT-corrected image (mean ± SD) | Germanium-corrected image (mean ± SD) | P | CT-corrected image (mean ± SD) | Germanium-corrected image (mean ± SD) | P | ||||||
| Tumor (kBq/mL) | |||||||||||
| All | 36* | 25.9 ± 18.4 | 24.7 ± 17.9 | <0.01 | 38.0 ± 23.2 | 36.4 ± 22.3 | <0.01 | ||||
| Bone | 9 | 25.1 ± 14.8 | 22.5 ± 13.1 | <0.01 | 38.6 ± 19.7 | 34.6 ± 17.4 | <0.01 | ||||
| Pelvis† | 5 | 26.1 ± 16.2 | 24.6 ± 14.7 | NS | 41.3 ± 24.0 | 39.4 ± 22.6 | NS | ||||
| Liver | 7 | 34.9 ± 16.7 | 33.0 ± 15.7 | <0.05 | 44.4 ± 17.9 | 42.4 ± 17.2 | NS | ||||
| Lung | 7 | 21.7 ± 20.7 | 21.5 ± 19.6 | NS | 33.1 ± 26.4 | 32.8 ± 24.7 | NS | ||||
| Lymph nodes | 7 | 14.2 ± 6.5 | 14.2 ± 5.9 | NS | 24.2 ± 13.1 | 24.0 ± 12.2 | NS | ||||
| Tumor-to-background ratio | |||||||||||
| All | 36* | 4.9 ± 4.1 | 4.8 ± 3.9 | NS | 7.4 ± 5.8 | 7.3 ± 5.5 | NS | ||||
| Bone | 9 | 5.9 ± 5.8 | 5.5 ± 5.4 | <0.05 | 9.1 ± 8.1 | 8.4 ± 7.6 | <0.01 | ||||
| Pelvis† | 5 | 5.9 ± 3.3 | 5.8 ± 2.8 | NS | 9.2 ± 5.4 | 9.0 ± 4.4 | NS | ||||
| Liver | 7 | 2.3 ± 0.9 | 2.4 ± 0.9 | NS | 3.0 ± 0.9 | 3.1 ± 0.8 | NS | ||||
| Lung | 7 | 6.3 ± 4.9 | 6.1 ± 5.0 | NS | 9.9 ± 6.3 | 9.6 ± 6.6 | NS | ||||
| Lymph nodes | 7 | 3.2 ± 1.3 | 3.4 ± 1.0 | NS | 5.4 ± 1.8 | 5.6 ± 1.3 | NS | ||||