Table 3.

Patient-based performance comparisons between PET/CT and cePET/CT

	PET/CT	cePET/CT
Sensitivity (%)	92.79 (86.42–96.30)	98.20 (93.67–99.50)
Specificity (%)	76.92 (67.28–84.38)	76.55 (67.02–84.76)
Positive predictive value (%)	83.06 (75.49–88.65)	83.85 (76.56–89.18)
Negative predictive value (%)	89.74 (81.05–94.71)	97.22 (90.43–99.23)
Positive likelihood ratio	4.02 (2.75–5.88)	4.26 (2.92–6.20)
Negative likelihood ratio	0.09 (0.05–0.18)	0.02 (0.01–0.09)
Diagnostic odds ratio	41.67 (16.96–115.67)	174.43 (41.26–1593.39)
Error rate (%)	14.36 (10.19–19.86)	11.39 (7.71–16.51)
Accuracy (%)	85.64 (80.14–89.81)	88.61 (83.49–92.29)
Youden’s index	0.6972 (0.700–0.6940)	0.7512 (0.7541–0.7483)

PET, positron emission tomography; CT, computed tomography; cePET/CT, contrast-enhanced PET/ CT.