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Table 6 Diagnostic indices of PET CT and MRI

From: Role of PET/CT in the follow-up of postoperative and/or post-therapy cancer rectum: comparison with pelvic MRI

   Sensitivity (%) Specificity (%) PPV (%) NPV (%) OA (%)
Presence of local tumor PET CT 94.7 100 100 94.1 97.1
MRI 94.7 100 100 94.1 97.1
LN affection PET CT 78.6 95.2 91.7 87 88.6
MRI 100 76.20 73.7 100 85.7
Extension to nearby structures PET CT 53.8 100 100 78.6 82.9
MRI 100 100 100 100 100
Post radiotherapy complications PET CT 85.7 100 100 96.6 97.1
MRI 100 100 100 100 100
Postoperative complications PET CT 100 100 100 100 100
MRI 100 100 100 100 100
  1. PPV positive predictive value, NPV negative predictive value, OA overall accuracy