Table 2.
Internal Consistency of Assessment of Flow Volumes Through the Mitral (MV) and Aortic Valve (AV) By Retrospective Valve Tracking and Particle Tracing Analysis
| MV flow (mL) | AV flow (mL) | Difference (AV‐MV) (mL)a | Pearson correlation coefficient | Intraclass correlation coefficient | ||
|---|---|---|---|---|---|---|
| Mean ± SD (min‐max) | Mean ± SD (min‐max) | Mean ± SD (min‐max) | ICC (95% C.I.) | Coefficient of variation (%) | ||
| Retrospective valve tracking scan 1 | 95.4 ± 17.0 (71.4‐121.2) | 92.7 ± 15.5 (68.4‐112.9) | −2.7 ± 5.5 (−11.2−7.1) | 0.95b | 0.97 (0.87‐0.99)b | 6 |
| Retrospective valve tracking scan 2 | 97.6 ± 24.0 (62.3‐135.0) | 95.3 ± 20.9 (66.0‐126.4) | ‐2.3 ± 5.7 (‐11.7‐6.8) | 0.98b | 0.98 (0.93‐1.00)b | 6 |
| Particle tracing scan 1 | 91.7 ± 23.6 (57.5‐133.1) | 91.6 ± 14.0 (71.5‐112.1) | ‐0.04 ± 11.3 (‐22.7‐14.0) | 0.95b | 0.92 (0.65‐0.98)c | 12 |
| Particle tracing scan 2 | 94.1 ± 20.0 (63.3‐121.8) | 88.1 ± 13.6 (68.2‐105.2) | ‐5.9 ± 6.8 (‐16.6‐5.0)c | 0.99b | 0.93 (0.56‐0.99)b | 8 |
a
Differences were calculated with the paired samples t‐test.
b
P < 0.001.
c
P < 0.05.
AV = aortic valve, MV = mitral valve.