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Comparison of basal (top), midventricular (middle) and apical (bottom) boundary contours with surface maps of circumferntial strains between the new 3D semi-automated method (left) and the Spottiswoode et al. (right) method. Abbreviations: 3D, three-dimensional; A, anterior; AS, anteroseptal; PS, posteroseptal; P, posterior; PL, posterolateral; AL, anterolateral.
