Method and apparatus for curvature detection in vessels from phase shifts of a plurality of input electrical signals
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United States of America Patent
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Jun 29, 1999
Grant Date -
N/A
app pub date -
Sep 21, 1998
filing date -
Sep 24, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ultrasound imaging apparatus for measuring the curvature of a vessel consisting of a distal transducer mounted on a transducer supporting device. A resilient deformable material is attached to the transducer supporting device and allows the angular orientation of the transducer to change based on the local vessel curvature. The ultrasound imaging apparatus emits ultrasound radiation from multiple pulsed electronic signals as the apparatus is moved through a vessel or sheath catheter at a known velocity. The distal transducer receives the scattered ultrasound radiation and differences in the phase shifts of the scattered ultrasound radiation are analyzed to detect or measure curvature.
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