The study demonstrates that canine endocardial motion during contraction does not follow simple linear or radial grid patterns, challenging assumptions used in regional segmental wall motion analysis.
Questions grid-based wall motion models; leaves open human translation of canine transmural patterns.
Regional segmental wall motion analysis assumes a linear or radial grid system. In this study, motion patterns of points on the canine endocardium were evaluated. Radiopaque endocardial and epicardial markers were inserted along the anterior and posterior descending coronary arteries. Postoperative cine radiography showed that the endocardial markers did not move along either linear or radial grids. The endocardial and epicardial markers were shown to have different patterns of movement.
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Zollikofer et al. (1980) studied this question.
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