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Yukov tissue characterization method and apparatus

  • US 10,687,787 B2
  • Filed: 07/07/2019
  • Issued: 06/23/2020
  • Est. Priority Date: 03/04/2016
  • Status: Active Grant
First Claim
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1. A tissue characterization method which applies B-scan visualization and two-frequency attenuation for characterization of a tissue in a patient comprising the following steps:

  • (a) providing a B-scan component wherein said B-scan component has a B-scan transducer, said B-scan transducer comprised of a plurality of piezo-elements, a scanning system and a pulse generator,(b) providing a two-frequency attenuation component, said two frequency attenuation component has a group of piezo-elements inside said B-scan transducer and is connected to a waveform generator and wherein said two-frequency attenuation component is configured to function through said group of piezo-elements, said group of piezo elements comprising a subset of said plurality of piezo-elements, said group of piezo-elements further configured to function together as a single A-mode transducer, said waveform generator of said two frequency component further configured to generate sinusoidal ultrasound excitation pulses for said A-mode transducer, said sinusoidal excitation pulses comprising pulses of two different frequencies,(c) placing the B-scan transducer on the patient'"'"'s body,(d) displaying on a monitor a B-scan image of the patient'"'"'s tissue,(e) selecting a region of interest on said B-scan image displayed on the screen of said monitor,(f) providing a foot pedal to activate connection of said subset of said plurality of piezo-elements thereby switching from a B-scan mode to a two-frequency A-scan mode,(g) sliding said B-scan transducer on said patient'"'"'s body to bring said A-mode transducer to a selected a spot of interest within said region of interest,(h) generating and displaying A-mode images on the screen of said monitor next to said B-scan image,(i) analyzing the A-mode images either visually or with an analyzer, with determination of the the frequencies, amplitudes, shapes, widths, and registered times of reflected signals at said chosen two different frequencies from said selected spot of interest to obtain data for a differential attenuation coefficient, thereby permitting differentiation between types of tissue within an organ through analysis of reflected signals from boundaries of tissue layers,(j) displaying said obtained data for said differential attenuation coefficient on the B-scan image as an overlay color image or as numerical data thereby permitting determination of the type of tissue matter from said selected spot of interest.

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