Table 5 Contingency table analysis of presence of mixed 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

 

Mixed+

Mixed−

Total

DECT+

23

34

57

DECT−

33

435

468

Total

56

469

525

SE

SP

PPV

NPV

0.41

0.93

0.40

0.93

 

Mixed+

Mixed−

Total

MRI+

40

24

64

MRI−

16

457

473

Total

56

481

537

SE

SP

PPV

NPV

0.71

0.95

0.63

0.97

 

Mixed+

Mixed−

Total

CT+

22

11

33

CT−

34

472

506

Total

56

483

539

SE

SP

PPV

NPV

0.39

0.98

0.67

0.93

  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, + mixed stenosis, − discoid, osseous, or no stenosis.
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