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Method and apparatus for measurement of acoustic impedance transitions in media such as human bodies

  • US 4,094,304 A
  • Filed: 08/05/1974
  • Issued: 06/13/1978
  • Est. Priority Date: 10/16/1972
  • Status: Expired due to Term
First Claim
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1. Apparatus for identifying and diagnosing parts within the human and animal bodies that comprises means for illuminating at least a portion of a body with acoustic impulse wave energy outgoing along a predetermined direction, whereby the wave energy is returned back in substantially the opposite direction from the body portion as a result of reflection therefrom, means responsive to the outgoing and returning wave energy to produce a resulting reflection impulse-response function, means for integrating the said reflection impulse-response function to provide a measure of impedance transitions in the body portion and means for correlating the same with body portion properties to identify the nature of said body portion.

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