ULTRASONIC SIGNAL PROCESSOR FOR A HAND HELD ULTRASONIC DIAGNOSTIC INSTRUMENT
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United States of America Patent
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app pub date -
Feb 10, 2014
filing date -
Jun 28, 1996
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Abandoned
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Abstract
A hand held ultrasonic instrument is provided in a portable unit which performs both B mode and Doppler imaging. The instrument includes a transducer array mounted in a hand-held enclosure, with an integrated circuit transceiver connected to the elements of the array for the reception of echo signals. A digital signal processing circuit performs both B mode and Doppler signal processing such as filtering, detection and Doppler estimation, as well as advanced functions such as assembly of multiple zone focused scanlines, synthetic aperture formation, depth dependent filtering, speckle reduction, flash suppression, and frame averaging.
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