COMPOSITION FOR ULTRASONICALLY QUANTITATING MYOCARDIAL PERFUSION

摘要

Myocardial perfusion is assessed quantitatively using a suspension of insoluble gas filled microspheres. In such use: the myocardium is ultrasonically imaged; the suspension of pressure-stable, water-insoluble gas-containing microspheres sized to pass through the pulmonary capillaries is injected intravenously; imaging is continued through the first transit of the microspheres through the myocardium; the videodensity versus time relationship is determined from the images; and blood flow through the myocardium is calculated from that relationship.