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Figure 4 Multiple short-axis slices during dipyridamole Tc-99m sestamibi single-photon emission computed tomography (SPECT) imaging in a patient with coronary artery disease after administration of placebo, low-dose metoprolol, and high-dose metoprolol, as well as Tc-99m sestamibi SPECT imaging at rest. A medium-sized anteroseptal, anteropical, and distal inferoapical perfusion abnormality is shown with placebo, with approximately 60% reduction is size and severity noted with both doses of metoprolol.
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