Scintigraphic myocardial imaging with 99mTC-labelled pyrophosphate of experimentally produced cardiomyopathy in dogs.
Scintigraphic examination of the myocardium using 99mTc-labelled pyrophosphate was carried out in 10 dogs with experimentally produced cardiomyopathy. This was brought about by intravenous administration of high doses of adrenalin and theophylline. The scan was positive in 8 out of 10 dogs. "Hot" foci were very extensive. The degree of accumulation was however low (2+). Histological examination of the myocardium using the light microscope showed only scarcely distinguishable damage to the tissue without the presence of necrosis. ECG examinations were normal in all cases. By means of 99mTc-labelled pyrophosphate even very small myocardial disorders can thus be detected. This fact may be of clinical importance for an early diagnosis of heart lesions.
D000818:Animals; D009202:Cardiomyopathies / Q000000981:diagnostic imaging*; D011756:Diphosphates; D004285:Dogs; D006321:Heart / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013667:Technetium; D016698:Technetium Tc 99m Pyrophosphate
D011756:Diphosphates; D016698:Technetium Tc 99m Pyrophosphate; D013667:Technetium