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Figure 1 Examples of reconstructed polar maps for three patients: A, B, C. In each set, the top panel is the raw perfusion (left) and raw F-18-fluorodeoxyglucose (FDG) uptake (right) polar maps; middle panel is the normalized perfusion and FDG uptake; and the lowest panel is the scar score (left) and mismatch score (right). (A) Predominantly scar in the inferolateral and anteroseptal walls and apex. Of the total left ventricle (LV) myocardium, 53% was normal, 42% was scar, and 5% was mismatch. The model predicted a change in ejection fraction (EF) of 0%; observed change was from 26% to 25% = –1%. (B) Partial mismatch (mixture of scar and hibernating myocardium) in the large defect involving the inferolateral wall and apex extending to the distal anteroseptal wall. Of the total LV myocardium, 62% was normal, 23% was scar, and 15% was mismatch. Model predicted change in EF of 4%; observed change was from 23% to 28% = 5%. (C) Small basal inferior scar is noted: 89% was normal, 9% was scar, and 2% was mismatch. Model predicted change in EF was 15%; observed change was from 23% to 37% = 14%.
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