Table 1.
Resolution | Cardiac function | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Spatial (mm) | Temporal (frames/cycle) | LV GLS (%) | LV GLS SR (%/s) | GCS (%) | GCS SR (%/s) | RV GLS (%) | |||||
5 | 20 | − 20.4 (3.66) | − 0.77 (0.16) | − 28.3 (5.51) | − 1.23 (0.34) | − 24.2 (3.50) | |||||
5 | 30 | − 21.3 (3.80) | 0.017 | − 0.94 (0.21) | < 0.001 | − 30.1 (6.05) | < 0.001 | − 1.57 (0.41) | < 0.001 | − 25.6 (4.43) | 0.046 |
5 | 40 | − 21.5 (3.84) | 0.244 | − 1.01 (0.23) | 0.001 | − 30.6 (5.86) | 0.274 | − 1.70 (0.41) | 0.001 | − 25.4 (4.53) | 0.741 |
5 | 50 | − 21.5 (3.86) | 0.903 | − 1.07 (0.23) | 0.008 | − 30.8 (5.81) | 0.627 | − 1.80 (0.38) | 0.013 | − 25.4 (4.20) | 0.903 |
8 | 20 | − 21.0 (3.60) | − 0.81 (0.17) | − 28.6 (5.28) | − 1.25 (0.32) | − 24.2 (4.59) | |||||
8 | 30 | − 20.9 (4.09) | 0.741 | − 0.95 (0.20) | < 0.001 | − 29.1 (4.98) | 0.015 | − 1.59 (0.38) | < 0.001 | − 24.8 (4.68) | 0.170 |
8 | 40 | − 20.7 (3.40) | 0.768 | − 0.98 (0.20) | 0.117 | − 29.8 (6.01) | 0.205 | − 1.67 (0.39) | 0.001 | − 25.2 (4.50) | 0.455 |
8 | 50 | − 21.3 (4.10) | 0.339 | − 1.05 (0.20) | 0.001 | − 30.3 (5.76) | 0.217 | − 1.73 (0.39) | 0.003 | − 25.4 (3.80) | 0.986 |
10 | 20 | − 20.7 (4.29) | − 0.82 (0.21) | − 28.2 (5.80) | − 1.22 (0.37) | − 22.8 (4.45) | |||||
10 | 30 | − 22.0 (4.17) | 0.001 | − 0.99 (0.21) | < 0.001 | − 29.6 (5.82) | 0.917 | − 1.59 (0.46) | < 0.001 | − 23.7 (3.78) | 0.099 |
10 | 40 | − 22.0 (4.67) | 0.768 | − 1.05 (0.25) | 0.030 | − 30.5 (5.80) | 0.085 | − 1.72 (0.46) | 0.014 | − 24.1 (3.92) | 0.590 |
10 | 50 | − 22.5 (4.55) | 0.062 | − 1.11 (0.26) | 0.002 | − 30.5 (5.77) | 0.002 | − 1.76 (0.44) | 0.014 | − 24.2 (3.92) | 0.601 |
Continuous variables are expressed as mean (standard deviation). LV/RV left/right ventricular, GLS/GCS/GRS global longitudinal/circumferential/radial strain, SR systolic strain rate. Wilcoxon-signed rank test was used to determine statistical significance. P-values were calculated comparing one temporal resolution to the successive higher one. Bold p-values indicate statistical significance