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Figure 4 Differences in infarct size over time. This figure depicts delayed enhancement short-axis images from three different animals. Images were obtained every 6 min after contrast injection until 30 min after contrast. The presence, location, and size of the hyperenhanced region were similar for all time points. There were high levels of agreement in measurement of myocardial infarct size between the first set of images at 6 min and all others up to 30 min after contrast injection.