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Global and regional strain imaging. Two-dimensional speckle tracking echocardiography (2DSTE)–derived strain imaging of the left ventricle apical 4-chamber view. Regional strain is graphically presented by 6 different color-coded curves in the longitudinal direction (along the heart wall). The peak of the average curve of all the segments (the white dotted curve) is considered the global longitudinal strain. The higher the magnitude of strain, the better the function.
