Table 2 Contingency table analysis of the presence of foraminal stenosis for DECT, MRI, and CT with both MRI and standard CT as standard of reference.

From: Neuroforamen stenosis remains a challenge in conventional computed tomography and new dual-energy techniques

 

MRI/CT+

MRI/CT−

Total

DECT+

106

33

139

DECT−

44

351

395

Total

150

384

534

SE

SP

PPV

NPV

0.71

0.91

0.76

0.89

 

MRI/CT+

MRI/CT−

Total

MRI+

123

13

136

MRI−

37

382

419

Total

160

395

555

SE

SP

PPV

NPV

0.77

0.97

0.90

0.91

 

MRI/CT+

MRI/CT−

Total

CT+

117

16

133

CT−

26

377

403

Total

143

393

536

SE

SP

PPV

NPV

0.82

0.96

0.88

0.94

  1. Data are given with 95% confidence intervals.
  2. SE sensitivity, SP specificity, PPV positive predictive value, NPV negative predictive value, MRI magnetic resonance imaging, CT computed tomography, DECT dual-energy computed tomography, + discoid or mixed stenosis in MRI or osseous or mixed stenosis in standard CT, − discoid stenosis in standard CT, osseous stenosis in MRI, or no stenosis.
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