Comparison of Attenuation-Corrected Studies With and Without Correction for Misalignment
| Segment | IRAC | IRAC-MC | MD | P |
|---|---|---|---|---|
| Anteroapical | 73.3 ± 6.3 | 79.2 ± 4.9 | 5.9 | <0.001 |
| Inferoapical | 75.7 ± 6.4 | 80.9 ± 5.3 | 5.2 | <0.001 |
| Apical anterolateral | 83.0 ± 5.5 | 86.6 ± 5.4 | 3.6 | 0.001 |
| Apical anterior | 73.8 ± 5.2 | 79.4 ± 4.5 | 6.6 | <0.001 |
| Apical anteroseptal | 77.5 ± 7.5 | 85.1 ± 5.3 | 7.6 | <0.001 |
| Apical inferoseptal | 84.0 ± 6.7 | 89.8 ± 5.8 | 5.8 | <0.001 |
| Apical inferior | 82.2 ± 5.4 | 84.6 ± 5.5 | 2.4 | 0.009 |
| Apical inferolateral | 86.5 ± 6.5 | 87.9 ± 6.7 | 1.4 | NS |
| Mid-anterolateral | 91.4 ± 3.7 | 90.6 ± 3.8 | −0.8 | NS |
| Mid-anterior | 81.3 ± 4.7 | 84.2 ± 4.7 | 2.9 | 0.001 |
| Mid-anteroseptal | 81.6 ± 7.1 | 84.9 ± 5.9 | 3.3 | 0.001 |
| Mid-inferoseptal | 85.5 ± 6.4 | 87.0 ± 5.2 | 1.5 | NS |
| Mid-inferior | 85.5 ± 6.6 | 85.3 ± 7.8 | −0.2 | NS |
| Mid-inferolateral | 91.5 ± 5.8 | 88.6 ± 6.1 | −2.9 | <0.001 |
| Basal anterolateral | 82.0 ± 4.6 | 77.6 ± 4.9 | −4.4 | <0.001 |
| Basal anterior | 72.6 ± 5.2 | 71.8 ± 6.9 | −0.8 | NS |
| Basal anteroseptal | 57.5 ± 9.0 | 56.2 ± 8.8 | −1.3 | NS |
| Basal inferoseptal | 61.9 ± 10.0 | 59.9 ± 10.2 | −2.0 | NS |
| Basal inferior | 77.2 ± 8.2 | 73.6 ± 9.3 | −3.6 | <0.001 |
| Basal inferolateral | 82.3 ± 7.7 | 76.8 ± 8.6 | −5.5 | <0.001 |
IRAC = iteratively reconstructed attenuation-corrected stress study; IRAC-MC = iteratively reconstructed attenuation-corrected stress study after correction for misalignment; MD = mean difference; NS = not significant.
Data are given as mean ± SD.