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Figure 1 Late ventricular enlargement in a patients with anterior myocardial infarction. Marked increase in volume results from increased circumference and sphericity. The late change in circumference is due to lengthening of contractile tissue rather than further expansion of the infarcted, noncontractile segment. The increased sphericity results from a rounding out of the sharp abnormalities in contour at the margins of the infarct (reproduced with permission from reference 31).
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