Method and apparatus for tissue characterization of animals using ultrasound

• US 5,685,307 A
• Filed: 02/28/1995
• Issued: 11/11/1997
• Est. Priority Date: 02/28/1995
• Status: Expired due to Term

• Current Assignee: Iowa State University Research Foundation Incorporated (Iowa State University)
• Original Assignee: Iowa State University Research Foundation Incorporated (Iowa State University)
• Inventors: Carlson, David L., Holland, Kyle H.
• Primary Examiner(s): JAWORSKI, FRANCIS J
• Application Number:
  US08/395,844
• Time in Patent Office: 987 Days
• Field of Search: 128/660.01, 128/660.06, 128/660.07, 128/661.01, 128/661.03, 128/662.03
• US Class Current: 600/437
• CPC Class Codes: A61B 8/0858 involving measuring tissue layers, e.g. skin, interfaces

Abstract

A method and apparatus for tissue characterization of animals using ultrasound wherein the apparatus generally comprises a hand-held ultrasound transducer array, a power source, a data acquisition unit and a communications means for coupling the hand-held ultrasound transducer array to the data acquisition unit. Display means and input means are provided for the control of the device by a user. The method includes gathering data concerning the animal tissue by using the apparatus to generate and receive ultrasound signals into and from the animal tissue and then processing the data which are gathered. This processing includes analyses which determine whether or not the hand-held ultrasound transducer array was positioned correctly relative to the animal tissue as well as the fat percentage and marbleization of the tissue.

Claims

1. A portable apparatus for tissue characterization in live animals and/or animal carcasses comprising:

a power source;

a hand-held ultrasound transducer array; and

a hand-held data acquisition unit operably coupled to the hand-held ultrasound transducer array and power source, the data acquisition unit including;

data receiving means for receiving data from the transducer array;

data input means for inputting data relevant to controlling the apparatus;

data storage means for storing the ultrasound transducer array data and inputted data;

display means for displaying the transducer data and inputted data;

data export means for transferring data gathered from the transducer array; and

data processing means for conditioning and analyzing data gathered from the transducer array and for providing an energy index representative of the tissue characteristics of the live animals or carcasses.

2. The apparatus of claim 1 wherein the power source is direct current.

3. The apparatus of claim 1 wherein the power source is alternating current.

4. The apparatus of claim 1 wherein the ultrasound transducer array is coupled to the data acquisition unit by cable.

5. The apparatus of claim 1 wherein the transducer is coupled to the data acquisition unit by wireless means for coupling.

6. In tissue characterization in live animals and/or animal carcasses using a piezo-electric transducer having a matching surface in association with a tissue surface of an animal to be analyzed, the improvement comprising a method of processing of a reflected signal from the tissue surface including the steps of:

processing said signal in a first mode to ascertain that acceptable contact and position have been made between the tissue surface of the animal and the matching surface of the piezo-electric transducer by analyzing the reflected signal from anatomical landmarks in the tissue on a quantitative as well as qualitative basis;

classifying the quality of the contact based on the energy level of the reflected signal and then processing said signal in a second mode to provide an energy index representative of tissue characteristics of the live animals or carcasses.

7. The method of claim 6 wherein the energy level of the reflected signal is measured by filtering, rectifying, and integrating the reflected signal.

8. The method of claim 6 wherein the energy level of the reflected signal is compared to a predetermined threshold power.