Research Article
Quantification of Biventricular Myocardial Strain Using CMR Feature Tracking: Reproducibility in Small Animals
Figure 5
Scatterplots showing the intraobserver, interobserver, and interstudy correlations between two readings (S1 and S2) for global biventricular myocardial strain of CMR-FT. Our linear regression analysis shows an excellent correlation for all LV myocardial strain values, except LRSSAX in interstudy measurement. The reproducibility of RV is variable; RCSSAX is the least reproducible myocardial strain value. The regression line is given with a 95% confidence interval. -squares and values are reported in the left upper corner of each graph. LLSLAX: left ventricular long-axis longitudinal strain; LCSSAX: left ventricular short-axis circumferential strain; LRSSAX: left ventricular short-axis radial strain; RLSLAX: right ventricular long-axis longitudinal strain; RCSSAX: right ventricular short-axis circumferential strain.