Regional Radiotracer Uptake for Attenuation-Corrected Myocardial Perfusion SPECT Images Before and After Reregistration
| Mean ± SD | AC to RR | |||
|---|---|---|---|---|
| Area | AC | RR | Difference | 95% confidence interval |
| Anterior | 64.1 ± 6.4 | 63.3 ± 6.8 | −0.81 | 1.13, −0.43 |
| Lateral | 68.4 ± 5.3 | 67.7 ± 5.7 | −0.69 | 1.03, −0.35 |
| Septal | 62.5 ± 8.1 | 61.1 ± 8.4 | −1.40 | 1.76, −1.03 |
| Inferior | 64.5 ± 7.8 | 62.7 ± 8.0 | −1.71 | 2.10, −1.32 |
| Anteroapical | 71.7 ± 7.0 | 73.0 ± 7.0 | 1.33 | 0.90, 1.75 |
| Inferoapical | 73.9 ± 6.9 | 74.4 ± 6.5 | 0.52 | 0.07, 0.97 |
AC = attenuation-corrected before reregistration; RR = attenuation-corrected after reregistration.
Data are percentage maximal pixel intensity for each of 6 evaluated segments of left ventricle, with AC-to-RR differences and 95% confidence intervals.