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Ultrasonic signal processor for power doppler imaging in a hand held ultrasonic diagnostic instrument

  • US 6,383,139 B1
  • Filed: 10/22/1999
  • Issued: 05/07/2002
  • Est. Priority Date: 06/28/1996
  • Status: Expired due to Term
First Claim
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1. In an ultrasound device, a digital signal processor comprising:

  • a digital B mode filter for filtering B mode signals;

    a digital Doppler filter for filtering Doppler signals including wall filtering and Hartley transform matrix functions to obtain a Fourier power spectrum, a B mode signal detection and mapping circuit; and

    a Doppler signal estimator circuit using the Fourier power spectrum.

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