TABLE 1

Patient-Based Statistics of Diagnostic Values of Single-Tracer and Dual-Tracer PET/CT

TracerSensitivity (%)Specificity (%)PPV (%)NPV (%)Accuracy (%)
18F-FDG*79 (78/99)91 (20/22)98 (78/80)49 (20/41)81 (98/121)
11C-ACT*64 (63/99)95 (21/22)98 (63/64)37 (21/57)69 (84/121)
Dual-tracer98 (97/99)86 (19/22)97 (97/100)90 (19/21)96 (116/121)
  • * Definition of TP for single-tracer PET/CT: correct detection of at least 1 metastatic lesion in a patient with metastatic HCC disease.