Image Quality and Extracardiac Activity
| Quantity | ULD HE SPECT | SLD A-SPECT |
| IQ | ||
| Excellent | 48 | 24 |
| Good | 41 | 48 |
| Fair | 5 | 22 |
| Poor | 7 | 7 |
| Mean score ± SD | 4.29 ± 0.85 | 3.88 ± 0.85 |
| P (Wilcoxon) | <0.0001 | |
| Extracardiac activity | ||
| None | 55 | 40 |
| Minimal | 27 | 35 |
| Mild | 10 | 19 |
| Moderate | 3 | 2 |
| Severe | 6 | 5 |
| Mean score ± SD | 0.79 ± 1.12 | 0.98 ± 1.06 |
| P (Wilcoxon) | 0.05 | |
Values are for consensus read.