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Table 3 Accuracy parameters of contrast-CT and PET-CT in post-RCT necks

From: Response evaluation of cervical lymph nodes after chemoradiation in patients with head and neck cancer - does additional [18F]FDG-PET-CT help?

 

Contrast-CT % (95%CIa)

PET-CT % (95%CIa)

Sensitivity

92.3 (64.0–99.8)

69.2 (38.6–90.9)

Specificity

25.0 (8.7–49.1)

80.0 (56.3–94.3)

PPVb

12.0 (9.2–15.6)

27.8 (13.0–49.8)

NPVc

96.7 (79.3–99.6)

95.0 (91.0–98.2)

Accuracy

31.7 (16.7–50.2)

78.9 (61.2–91.1)

  1. a 95%CI 95% confidence interval, b PPV Positive predictive value, c NNP Negative predictive value