Method for Evaluating Regional Ventricular Function and Incoordinate Ventricular Contraction
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United States of America Patent
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Issued Date -
Jan 10, 2008
app pub date -
Jun 27, 2006
filing date -
Jun 27, 2006
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Abandoned
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Abstract
A method for assessing cardiac function using an ultrasound imaging catheter system includes positioning an ultrasound catheter so the ultrasound transducer can image a ventricle, obtaining images of the ventricle at two or more times within the cardiac cycle, recognizing an edge of the endocardium, measuring dimensions of the ventricle, calculating a volume or area of the ventricle at the two or more points in the cardiac cycle, and calculating the ejection fraction based upon the difference in volume or area at the two or more times in the cardiac cycle. The method can be used to determine a location for an intervention, such as placement of a pacemaker pacing lead, and may be performed before and after an intervention to assess the impact of the treatment on cardiac function.
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