Location sensing with real-time ultrasound imaging
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United States of America Patent
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Aug 10, 2004
Grant Date -
Jan 16, 2003
app pub date -
Feb 19, 2002
filing date -
Jul 10, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus for mapping a surface of a cavity within a body of a subject includes an elongate probe, having a longitudinal axis and including a distal portion adapted for insertion into the cavity. A primary acoustic transducer on the distal portion of the probe is adapted to emit acoustic waves while the probe is in the cavity. A plurality of secondary acoustic transducers, distributed along the longitudinal axis over the distal portion of the probe, are adapted to receive the acoustic waves after reflection of the waves from the surface of the cavity and to generate, responsive to the received waves, electrical signals indicative of times of flight of the waves.
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