Table 6 Performance of PET/CT and cePET/CT in tumors, sites of disease, and clinical questions whose diagnostic results were significantly different between the two imaging modalities

Tumor type

Head and neck cancer

Sensitivity (%)

71.33 (63.64–77.97)

82.67 (75.81–87.89)

Specificity (%)

46.30 (33.69–59.39)

48.15 (35.39–61.15)

Gastrointestinal cancer ^a

Sensitivity (%)

71.25 (60.54–80.01)

95.00 (87.84–98.04)

Specificity (%)

84.21 (62.43–94.48)

89.47 (68.61–97.06)

Site of disease

Abdomen

Sensitivity (%)

97.53 (91.44–99.32)

92.59 (84.77–96.56)

Specificity (%)

46.15 (23.21–70.86)

92.31 (66.69–98.63)

Questions

Restaging ^b

Sensitivity (%)

83.96 (75.81–89.74)

96.23 (90.70–98.52)

Specificity (%)

78.37 (52.33–92.50)

78.57 (52.41–92.43)