title: Myocardial imaging with 9-[Te-123m]telluraheptadecanoic acid.
abstract: The distribution of radioactivity in the myocardium of rats and dogs infarcted by ligation of the left anterior coronary artery has been determined after intravenous injection of 9-[Te-123m]telluraheptadecanoic acid (Te-123m HDA]. In rats the normal myocardium concentrated radioactivity (3.7% +/- 0.28 injected dose/g) to nearly three times that in the zones of infarction (1.12% +/- 0.18 dose/g0. The focal defects detected in the gamma-camera images of rats and dogs correspond well with areas of infarction identified in the excised hearts by staining with triphenyltetrazolium chloride. The distribution of radioactivity from Te- 123m HDA in dog hearts sectioned at autopsy showed a linear correlation (r = 0.94) with blood flow as determined with scandium-46-labeled microspheres.
mesh_terms: D000818:Animals; D003326:Coronary Circulation; D004285:Dogs; D005227:Fatty Acids; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D008297:Male; D051379:Mice; D009206:Myocardium / Q000378:metabolism; D011877:Radionuclide Imaging; D051381:Rats; D011919:Rats, Inbred Strains; D013691:Tellurium; D014018:Tissue Distribution
chemical_list: C032920:9-tellurium Te 123m heptadecanoic acid; D005227:Fatty Acids; D013691:Tellurium