SummaryImaging of acute myocardial infarction using Technetium 99m labelled phosphate compounds. G. D. Kerr, A. Pitt, C. C. L. Wong, L. M. Dugdale and S. T. Anderson,Aust. N.Z. J. Med.,1977, 7. pp. 1–7.Technetium 99m pyrophosphate or polyphosphate administered intravenously roon after acute myocardial infarction produces positive images of the area and extent of myocardial necrosis. Forty‐four patients have been studied of whom 39 had myocardial infarction. There was good correlation of the site and extent of infarction as indicated by the scintigram with electrocardiogram and cardiac enzyme crite