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Figure 1 (A) Coronary arteriogram of a 65-year-old woman with effort angina. Severe stenosis is seen in the left anterior descending coronary artery (arrow). (B) Sequential tetrofosmin images. No significant abnormal perfusion is observed on the tetrofosmin images obtained at the time of hospital admission. However, the BMIPP images obtained on the next day show severely reduced uptake in the apex and anteroseptal regions.