Table 1. Comparison between 18F-FDG PET alone and 18F-FDG PET/CT in identifying 18F-FDG-avid primary and nonprimary lesions.
| Primary lesions |
Nonprimary lesions
|
|||||
|---|---|---|---|---|---|---|
| Lymph nodesa | Fat uptake | Muscle | Lung | Rib | ||
| 18F-FDG PET | 6 | 13 | Hot spot reported (unable to define anatomical territory) | Hot spot reported (unable to define anatomical territory) | 1 Hot spot reported (unable to define anatomical territory) | 1 Hot spot reported (unable to define anatomical territory) |
| 18F-FDG PET/CT | 6 | 9 | 2 | 2 | 1 Confirmed on high-resolution CT | 1 Confirmed on bone scan |
18F-FDG PET=2-[fluorine-18]fluoro-2-deoxy-D-glucose; CT=computed tomography.
a
Includes four lesion identified as activity in the lymph nodes on 18F-FDG PET and were subsequently confirmed to be fat and muscle uptake on 18F-FDG PET/CT.