Performance of grey scale, colour coded, and power Doppler contrast echo techniques for detecting SPECT defects
| Grey scale | Colour coded | Power Doppler |
p Value, GS v C |
p Value, GS v P |
p Value, C v P | |
| Predicting severe SPECT defects by severe myocardial contrast echo defects (score 0) | ||||||
| Sensitivity | 27% | 19% | 31% | NS | NS | NS |
| Specificity | 75% | 78% | 83% | NS | < 0.01 | NS |
| Accuracy | 70% | 72% | 78% | NS | < 0.01 | NS |
| Predicting severe SPECT defects (score 0) by any contrast defect (score 0, 1) | ||||||
| Sensitivity | 38% | 27% | 46% | NS | NS | < 0.05 |
| Specificity | 42% | 47% | 54% | NS | NS | NS |
| Accuracy | 41% | 46% | 53% | NS | < 0.05 | NS |
| Predicting any SPECT defect (score 0, 1) by any MCE defect | ||||||
| Sensitivity | 47% | 40% | 56% | NS | NS | < 0.05 |
| Specificity | 42% | 48% | 56% | NS | NS | NS |
| Accuracy | 43% | 47% | 56% | NS | < 0.05 | NS |
GS, grey scale; C, colour coded; P, power Doppler; MCE, myocardial contrast echo; SPECT, single photon emission computed tomography.