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Ultrasonic method and apparatus for imaging and characterization of bodies

  • US 4,063,549 A
  • Filed: 12/22/1975
  • Issued: 12/20/1977
  • Est. Priority Date: 12/22/1975
  • Status: Expired due to Term
First Claim
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1. In a method for the non-invasive examination of body parts through the selective ensonification of at least a portion of a body part with acoustical energy pulses to produce acoustical energy echo pulses, and the detection and processing of said echo pulses to indicate the relative specific acoustic impedance of the thusly ensonified body part, the steps of, transforming said echo pulses from the time domain to the frequency domain throughout a predetermined frequency range, deconvolving said echo pulses in the frequency domain to determine the impulse responses in the frequency domain of the ensonified body part at a plurality of frequencies within said frequency range, and determining the impulse responses of the ensonified body part in the time domain by transformation of said impulse responses from the frequency domain to the time domain.

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