Repeatability of Gated SPECT Measurements
| Reference | Parameter | No. of patients | Measurement | Agreement | ||
|---|---|---|---|---|---|---|
| Year | Author | |||||
| 1997 | Johnson et al. (23) | LVEF | 15 | Consecutive days | r = 0.98, SD = 2.6% | |
| 1998 | Berman et al. (24) | LVEF | 180 | Prone | r = 0.93, SD = 3.2% | |
| EDV | 180 | Supine | r = 0.97, SD = 2.6 mL | |||
| ESV | 180 | Same-day consecutive scans | r = 0.98, SD = 4.8 mL | |||
| 2001 | Paeng et al. (25) | RWM | 31 | Same-day consecutive scans | r = 0.95 (quantitative); 79%*, κ = 0.81 (visual) | |
| SWT | 31 | Same-day consecutive scans | r = 0.88 (quantitative); 71%*, κ = 0.71 (visual) | |||
↵* Exact segmental agreement.
κ = Cohen’s κ.
Measurements were performed using QGS software (18,19).