Left atrial strain assessment using cardiac computed tomography in patients with hypertrophic cardiomyopathy

Figures

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  Fig. 1. Algorithm for echocardiographic estimation of diastolic dysfunction grade in patients with HCM. HCM hypertrophic cardiomyopathy, TR velocity tricuspid valve regurgitant velocity, LAVI left atrial volume index, DD1 Grade 1 diastolic dysfunction, DD2 Grade 2 diastolic dysfunction

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  Fig. 2. Illustrative examples of CT-derived LA strain analysis. CT computed tomography, LASr left atrial reservoir strain, LASc left atrial conduit strain, LASp left atrial booster pump strain

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  Fig. 3. Correlations between CT-derived LA strain and LAVI. There are significant correlations between CT-derived LA strain [LASr (a), LASc (b), LASp (c)] and LAVI. CT computed tomography, LAVI left atrial volume index, LASr left atrial reservoir strain, LASc left atrial conduit strain, LASp left atrial booster pump strain

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  Fig. 4. Correlations between CT-derived LA strain and LVLS. There are significant correlations between CT-derived LA strain [LASr (a), LASc (b), LASp (c)] and LVLS. CT computed tomography, LVLS left ventricular longitudinal strain, LASr left atrial reservoir strain, LASc left atrial conduit strain, LASp left atrial booster pump strain

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  Fig. 5. Comparison of CT-derived LA strain between patients with HCM and non-HCM patients. CT-derived LA strain [LASr (a), LASc (b), LASp (c)] was significantly lower in patients with HCM than those in non-HCM patients. HCM hypertrophic cardiomyopathy, CT computed tomography, LASr left atrial reservoir strain, LASc left atrial conduit strain, LASp left atrial pump strain

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  Fig. 6. Bland–Altman plots for inter- and intra-observer analysis. Bland–Altman plots of LASr, LASc, and LASp for intra- (a–c) and inter-observer analysis (d–f). LASr left atrial reservoir strain, LASc left atrial conduit strain, LASp left atrial pump strain