Method of ultrasonically quantitating myocardial perfusion using as intravenously injected tracer
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
Jun 5, 1996
filing date -
May 3, 1994
priority date (Note) -
Expired
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Abstract
Myocardial perfusion is assessed quantitatively by an ultrasonic echocardiographic procedure in which: the myocardium is ultrasonically imaged; an ultrasonic contrast agent consisting of a 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.
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