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Figure 4 Example of end-systolic color kinesis images obtained in a patient at rest (top), low dose (center) and peak dose of dobutamine infusion (bottom) in the four standard echocardiographic views (from left to right). At rest, the inferior segment in the short-axis view, basal septal segment in the apical four-chamber view and basal-posterior segment in the long-axis view were hypokinetic as reflected by the narrow color bands (top, open arrows). The inferior segment and basal-posterior segment subsequently improved with dobutamine, and basal septal segment did not change significantly. In contrast, anteroseptal and septal segments in the short-axis view, mid-septal and mid-inferior segments in the apical views, as well as mid- and basal anteroseptal segments in the long-axis view, became abnormal at peak dobutamine, as reflected by narrow or disrupted color bands (bottom, solid arrows). Coronary angiography in this patient revealed significant stenosis of both the right coronary and the left anterior descending coronary arteries.