Method for recording ultrasound images to diagnose heart and coronary artery disease
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United States of America Patent
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-
Oct 6, 1992
Grant Date -
N/A
app pub date -
Feb 13, 1991
filing date -
Feb 13, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Heart performance is evaluated by collecting ultrasound images of at least one chamber of the heart of a patient after peak exercise. The images are subsequently displayed and analyzed to determine the presence and degree of heart disease, such as coronary artery disease (CAD). Collecting the images is done continuously at a rate of at least eight images per heart beat synchronized to a predetermined point in each heart beat over a time period which is normally sufficient to capture ischemic events resulting from the peak exercise. Each image thus synchronized represents a similar condition of each heart beat, thereby facilitating accurate comparisons. Collecting of images can be interrupted to eliminate blank or obscured images while the ultrasound sensor is repositioned. The collected images can be displayed and subsequently analyzed to determine the presence and degree of heart disease by comparing the images from successive heart beats.
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