Summary of 55 HCC Lesions Detected by 11C-Acetate and 18F-FDG in Patients of Group Ia (≤3 HCC Lesions per Patient Liver)
| Lesion uptake characteristics | No. of lesions | No. of lesions | Lesion uptake characteristics |
|---|---|---|---|
| 11C-Acetate + and 18F-FDG −* | 29 | 7 | 18F-FDG + and 11C-acetate −* |
| 11C-Acetate + and 18F-FDG + | 19 | 19 | 18F-FDG + and 11C-acetate + |
| Total 11C-acetate + lesions | 48 | 26 | Total 18F-FDG + lesions |
| 11C-Acetate − and 18F-FDG − | 0 | 0 | 18F-FDG − and 11C-acetate − |
| 11C-Acetate sensitivity (%) | 87.3 | 47.3 | 18F-FDG sensitivity (%) |
↵* Lesion is considered negative for PET tracer when it is isointense with normal liver tissue by visual inspection and is supported by lesion-to-liver SUV ratio of <1.20.
+ = Positive for PET tracer; − = negative for PET tracer.