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Arch Intern Med. 1971;128(2):185-196.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Myocardial perfusion

San Diego investigators are applying a technique used to examine circulation in the lung to the study of myocardial perfusion.

The diagnostic technique is based on the principle of capillary blockade. Particles of macroaggregated albumin of less than 80µ in diameter were labelled with 99m technetium or iodine 131 and injected into 29 patients. One patient had a saphenous vein bypass graft, and the other 28 patients were suspected of having coronary artery disease.

Allan L. Simon, MD, of the University Hospital of San Diego County, reported the study at the Association of University Radiologists meeting in Durham, NC. He said that this technique seems better than other types of radionuclide coronary angiography because:

• multiple views can be seen with a single injection
  
• various coronary branches can be examined by using different radionuclides
  
• the image can be controlled well by selective catheterization, and
  
• background radiation is all but
  

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