Table 2 Comparison of cardiac magnetic resonance imaging and exercise tolerance testing for detecting significant coronary artery disease on x ray angiography and on revascularisation.
| Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Diagnostic accuracy (%) | |
|---|---|---|---|---|---|
| Significant coronary stenosis | |||||
| CMR | 86%* | 100%* | 80% | 60%* | 89%* |
| ETT | 48%* | 50%* | 82% | 17%* | 49%* |
| Revascularisation | |||||
| CMR | 94%* | 53% | 65% | 90%* | 74% |
| ETT | 56%* | 59% | 50% | 56%* | 57% |
*p<0.05 for comparison between CMR and ETT.
CMR, cardiac magnetic resonance; ETT, exercise tolerance test; NPV, negative predictive value; PPV, positive predictive value.