Performance parameter | SGD (n = 39) | RPM (n = 39) | P |
Respiratory gating accuracy (dCycle) | |||
Inhalation peak detection (%) | 100.0 (86.3–102.1) | 92.0 (26.7–101.0) | <0.0001 |
Time lag (ms) | 25.0 (5.7–146.4) | 285.4 (137.7–595.5) | <0.0001 |
Time lag shift (classes) (dtSGD) | <0.0001 | ||
<100 ms | 35 (89.7%) | 0 (0.0%) | |
≥100 ms | 4 (10.3%) | 39 (100.0%) | |
Deviation of end-expiration baseline | 8.6 mL (−2.5–53.3) | 18.6 mm (−17.9–342.2) | 0.0018 |
Gated BTV | |||
Gated BTV availability | 0.1250 | ||
No | 1 (2.6%) | 5 (12.8%) | |
Yes | 38 (97.4%) | 34 (87.2%) | |
BTV (mL) | 7.2 (0.2–188.0) | 5.4 (0.8–167.0) | 0.1767 |
Gated SUVmax (g/mL) | 2.8 (1.0–43.1) | 2.0 (0.9–19.6) | 0.1966 |
Qualitative data are expressed as numbers followed by percentages in parentheses; continuous data are expressed as median followed by range in parentheses.