Table 3. Improvement in confidence of each observer in assigning 18F-FDG-avid lesions to an anatomical territory when using 18F-FDG PET/CT, as compared with 18F-FDG PET alone.
18F-FDG PET alone
|
18F-FDG PET/CT
|
||||
---|---|---|---|---|---|
Lesion detectability | Anatomical localisation | Lesion detectabilitya | Anatomical localisationa | (%) Improve- ment | |
Observer 1 | 21 | 12 | 23 | 23 | 57 |
Observer 2 | 21 | 9 | 23 | 23 | 43 |
Observer 3 | 21 | 11 | 23 | 23 | 52 |
51% | 100% | 51 |
18F-FDG PET=2-[fluorine-18]fluoro-2-deoxy-D-glucose; CT=computed tomography.
Includes two lesions identified on enhanced CT, which did not show 18F-FDG uptake and were subsequently confirmed to be benign enlarged cervical nodes on histology.