Table 4.
Sensitivity, specificity, and diagnostic accuracy of scintigraphic perfusion studies and agreement with coronary angiography.
| Overall | LAD | LCX | RCA | |||||
|---|---|---|---|---|---|---|---|---|
| MIBI | DBODC | MIBI | DBODC | MIBI | DBODC | MIBI | DBODC | |
| No. of disease | 25 | 25 | 10 | 12 | 9 | 8 | 13 | 13 |
| Sensitivity (%) | 86 | 86 | 53 | 63 | 64 | 57 | 87 | 87 |
| Specificity (%) | 65 | 88 | 96 | 96 | 94 | 94 | 68 | 87 |
| Accuracy (%) | 78 | 87 | 78 | 83 | 85 | 83 | 74 | 87 |
| ▲Kappa (κ) | 0.53 | 0.73 | 0.52 | 0.63 | 0.62 | 0.55 | 0.48 | 0.71 |
Data are presented as number (%); MIBI = 99mTc-MIBI, DBODC = 99mTc-N-DBODC5; LAD: left anterior descending coronary artery; LCX: left circumflex coronary artery; RCA: right coronary artery. ▲CA was used as the “gold standard” for the calculation of the κ, which is determine between SPECT MPI and CA. If there is no agreement, κ = 0.20–0.39; moderate agreement, κ = 0.40–0.59; very good agreement, κ = 0.60–0.79; excellent agreement, κ = 0.80–1.00.