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. 2021 May 17;23:60. doi: 10.1186/s12968-021-00740-5

Table 1.

Cardiac function patients

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