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Prepump and postpump mean contrast signal intensity (dB) ± 1 SD with mean difference (run 2).
| Prepump SI (dB) | Postpump SI (dB) | Mean difference | ||
|---|---|---|---|---|
| 2400 RPM | 14.6 ± 0.7 | 9.7 ± 0.9 | 4.8 ± 1.6 | p < 0.0001 |
| 2800 RPM | 15.3 ± 0.7 | 11.1 ± 0.7 | 4.2 ± 1.1 | p < 0.0001 |
| 3200 RPM | 15 ± 0.7 | 12.2 ± 0.9 | 2.8 ± 1.2 | p < 0.0001 |
| 3600 RPM | 15.3 ± 0.6 | 13 ± 1.1 | 2.3 ± 1.3 | p < 0.0001 |
