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Figure 8 Signal density-time curves in a canine model of left anterior descending artery stenosis during infusion of adenosine, intravenous iodinated contrast (2.5 ml/s), and dynamic multidetector computed tomography scanning. Myocardial curves were measured from the anterior myocardial wall (stenosed) and the inferior myocardial wall (remote). Vertical lines illustrate the period that helical multidetector computed tomography scanning took place during this study. Helical scanning was triggered when bolus tracking detected a signal density of 180 HU in the ascending aorta. LV = left ventricle.
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