Table 2.
Correlation between regional FDG uptake and WBC or neutrophil
| WBC | Neutrophil | |||||
|---|---|---|---|---|---|---|
| Regions | Baseline | First follow-up | Second follow-up | Baseline | First follow-up | Second follow-up |
| Glenoid | 0.24 | -0.06 | -0.07 | 0.19 | -0.06 | 0.08 |
| Proximal Humerus | 0.21 | -0.22 | -0.04 | 0.20 | -0.20 | 0.09 |
| Cervical Spine | 0.05 | -0.19 | -0.26 | 0.00 | -0.19 | -0.25 |
| Thoracic Spine | 0.24 | -0.05 | -0.11 | 0.16 | -0.02 | 0.04 |
| Lumbar spine | 0.37* | 0.23 | 0.37 | 0.33 | 0.24 | 0.40 |
| Sacrum | 0.39* | 0.32 | 0.28 | 0.40* | 0.32 | 0.36 |
| Femoral Head | 0.01 | 0.01 | -0.29 | 0.02 | 0.02 | -0.17 |
| Femoral Neck | 0.18 | -0.04 | 0.17 | 0.15 | -0.04 | 0.34 |
| Proximal Femur | 0.09 | 0.19 | 0.00 | 0.08 | 0.19 | 0.14 |
Correlation values of each parameter with FDG uptake varied among skeletal regions and scan time points. Sacrum and lumbar were the first and second highest correlation between baseline and the first follow-up, respectively. On the second follow-up, the lumbar spine had the highest correlation.
* Correlation is significantly different from 0 (p < 0.05).