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Correlations between the global longitudinal strain of the right ventricle by automated function imaging (GLSRV-EchoPAC), echocardiographic parameters, and serum B-natriuretic peptide (BNP) level. GLSRV-VVI shows good correlations with an RV fractional area change (RVFAC, A), tricuspid annular plane systolic excursion (TAPSE, B), RV Tei index (C), and LogBNP (D).
