Quantitative Findings from 18F-FDG TB PET/CT–Positive Joints
| 18F-FDG PET metrics derived from… | Non-AIA (n = 6) | AIA (n = 24) | P |
|---|---|---|---|
| 68 Joints | |||
| Positive count | 6.5 ± 4.9 (2–14) | 19.3 ± 12.6 (0–49) | 0.01 |
| Summed scores | 14.2 ± 10.7 (4–30) | 44.5 ± 30.2 (0–124) | 0.01 |
| Summed rSUVmax | 10.7 ± 8.7 (2.9–25.2) | 28.6 ± 19.3 (1.5–90.2) | 0.001 |
| 28 Joints | |||
| Positive count | 3.5 ± 2.7 (0–7) | 10.7 ± 7.6 (0–26) | 0.02 |
| Summed scores | 7.7 ± 5.9 (0–14) | 24.1 ± 17.1 (0–64) | 0.02 |
| Summed rSUVmax | 6.7 ± 4.1 (1.8–12.5) | 16.3 ± 11.1 (4.2–50.3) | 0.001 |
Values are reported as mean ± SD (minimum–maximum).
rSUVmax = ratio between joint SUVmax and blood pool SUVmean.