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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