Deformação = Strain = Dúvidas

figure4

https://cardiovascularultrasound.biomedcentral.com/articles/10.1186/s12947-020-00204-3

Area strain is determined as the percentage decrease in the size of endocardial (or mid-myocardial) surface area, defined by vectors of longitudinal and circumferential deformation at end-systole from its original area at end-diastole [6]. Principal strain represents the major direction and magnitude of the deformation in which no shear strain occurs. It reflects longitudinal, circumferential, and torsional deformation; therefore, it can represent dynamic 3D movements of the left ventricle

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