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Assessment of "microvascular no-reflow phenomenon" using technetium-99m macroaggregated albumin scintigraphy in patients with acute myocardial infarction

^a Division of Cardiology, Shimada Municipal Hospital, Shimada, Shizuoka, 427, Japan

View larger version (118K): [in a new window]   Figure 1 The grading of technetium-99m macroaggregated albumin single-photon emission computed tomographic defect score in patients with anterior myocardial infarction. A four-point defect score system was employed (normal = 0, Panel A; slightly reduced = 1, Panel B; moderately reduced = 2, Panel C; and absent uptake = 3, Panel D). The short-axis slices from apical to basal are displayed on the left and vertical long-axis slices on the right.

View larger version (15K): [in a new window]   Figure 2 Correlation of the time to recanalization from the onset of symptoms of acute myocardial infarction with the percent count as a measure of technetium-99m macroaggregated albumin uptake in the infarct-related segments.