Table 4 Sensitivity, specificity, negative predictive value, and positive predictive value of transcranial doppler ultrasonography in comparison with transesophageal echocardiography in pfo detection
| Technique | PFO (%) | PPV (%) | NPV (%) | Sensitivity (%) | Specificity (%) |
|---|---|---|---|---|---|
| Contrast-enhanced TCD | 90 | 98 | 89 | 95 | 92 |