Table 5

Comparison of catheter venography (as "gold standard/benchmark") for the detection of abnormal findings in the internal jugular veins and in azygos vein/vertebral veins using intravascular ultrasound
Catheter venography # of positive cases Noninvasive and invasive imaging modalities # of positive cases Total # of cases Sensitivity Specificity PPV NPV OR
IJV right 11 IVUS IJV right 10 20 72.7 77.8 80 70 9.33 (1.19-72.99)
IJV left 13 IVUS IJV left 15 18 84.6 20 73.3 33.3 1.38 (.10-19.64)
IJVs total 17 IVUS IJV total 18 20 88.2 0 83.3 0 1.20 (.98-1.48)
Azygos total 10 IVUS azygos total 17 20 90 20 52.9 66.7 2.25 (.17-29.77)

Legend: IJVs - internal jugular veins; VVs - vertebral veins; D; OR -odds ratio. Nineteen and 18 patients successfully obtained CV and IVUS in the left IJV, respectively (because of difficulty to access with the wire). All 20 patients successfully obtained other noninvasive and invasive examinations in the explored vein territories. Therefore, for the left IJVs comparisons with CV and IVUS, only data from 19 and 18 patients were used.

Zivadinov et al.

Zivadinov et al. BMC Neurology 2013 13:151   doi:10.1186/1471-2377-13-151

Open Data