Ultrasound systems and methods of identifying fluids in body regions using the same

Patent metadata

Field	Value
Publication number	US-11446004-B2
Application number	US-201815985808-A
Country	US
Kind code	B2
Filing date	May 22, 2018
Priority date	Jun 9, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

Embodiments disclosed herein are directed to systems and methods for determining if a fluid is present in a body region. The systems and methods include using ultrasound systems having operational parameters that provide ultrasound echo maps having high resolution B-line artefacts.

First claim

What is claimed is:

1. A method for determining a presence of fluid in a body region, the method comprising:
emitting ultrasound radiation at a frequency below about 15 MHz into a body region from an ultrasound transducer having a plurality of ultrasonic elements, wherein the ultrasound radiation has a dynamic range value that is less than about one third of a maximum dynamic range value of the ultrasound transducer, and wherein the maximum dynamic range value includes a maximum number of the plurality of ultrasonic elements in the ultrasonic transducer to individually receive returned ultrasound radiation;
controlling one or more properties of the ultrasound radiation with a computing device operably coupled to the ultrasound transducer by actuating one or more operational programs having machine readable and executable instructions for controlling the ultrasound transducer, wherein the one or more operational programs include at least one B-line mode operational program and at least one non-B-line mode operational program, wherein the at least one B-line mode operational program includes machine readable and executable instructions for the plurality of ultrasonic elements for causing the ultrasound transducer to have a focal point about 1 mm to about 10 mm above a proximal surface of an interrogation site in the body region;
receiving returned ultrasound radiation from the body region with the ultrasound transducer;
automatically determining, via a machine vision system, a combination of parameters having a signal-to-noise ratio of at least 2 and a sharpness ratio of at least 0.2; and
generating, with the computing device, an ultrasound echo map with the returned ultrasound radiation that includes one or more B-lines having the determined combination of parameters.

2. The method of claim 1 , wherein:
the at least one non-B-line mode operational program includes machine readable and executable instructions for the plurality of ultrasonic elements in the ultrasound transducer; and
the at least one B-line mode operational program includes machine readable and executable instructions for the plurality of ultrasonic elements for only actuating less than about half of the ultrasonic elements of the non-B-line mode operational program.

3. The method of claim 2 , wherein the at least one B-line mode operational program includes machine readable and executable instructions for the plurality of ultrasonic elements for only actuating about 4 to about 13 of the ultrasonic elements.

4. The method of claim 1 , wherein:
the at least one non-B-line mode operational program includes machine readable and executable instructions providing a power output value for the plurality of ultrasonic elements in the ultrasound transducer; and
the at least one B-line mode operational program includes machine readable and executable instructions providing a power output value for the plurality of ultrasonic elements that is less than about half of the power output value of the at least one non-B-line mode operational program.

5. The method of claim 1 , wherein:
the at least one non-B-line mode operational program includes machine readable and executable instructions providing a first frequency value for the plurality of ultrasonic elements in the ultrasound transducer; and
the at least one B-line mode operational program includes machine readable and executable instructions providing a second frequency value for the plurality of ultrasonic elements for causing the frequency of the at least one B-line mode operational program to be 85% or less of the first frequency value of the at least one non-B-line mode operational program.

6. The method of claim 5 , wherein the at least one B-line mode operational program includes machine readable and executable instructions providing a second frequency value for the plurality of ultrasonic elements for causing the frequency of the at least one B-line mode operational program to be between about 3 MHz and about 10 MHz.

7. The method of claim 1 , wherein the at least one B-line mode operational program includes machine readable and executable instructions for causing the ultrasound transducer to emit ultrasound radiation having a focused beam form in comparison to a single plane wave, multi-angle plane wave, weakly focused overlapping beam, or spatial compounding.

8. The method of claim 1 , wherein the at least one B-line mode operational program includes machine readable and executable instructions for causing the ultrasound transducer to emit ultrasound radiation at a frequency of about 3 MHz to about 10 MHz to provide an ultrasound echo map having one or more B-lines that include a combination of a maximized signal-to-noise ratio and a maximized sharpness ratio.

9. The method of claim 1 , wherein the at least one B-line mode operational program includes machine readable and executable instructions for causing one or more of:
the ultrasound transducer to emit ultrasound radiation at a frequency of about 3 MHz to about 10 MHz to provide an ultrasound echo map having a B-line that includes a combination of a maximized signal-to-noise ratio and a maximized sharpness ratio;
a power output value of a plurality of ultrasonic elements to operate at less than about one quarter of a maximum power output of the plurality of ultrasonic elements; and
a number of the plurality of ultrasonic elements in the ultrasound transducer from emitting ultrasound radiation such that about 4 to about 13 of the plurality of the ultrasonic elements of the plurality of ultrasound elements emit ultrasound radiation.

Assignees

• Tokitae Llc

Inventors

• Mehanian Courosh
• Wachsmann-Hogiu Sebastian
• Wilson Benjamin K
• Zheng Xinliang

Classifications

• A61B8/54

  Control of the diagnostic device · CPC title

• A61B8/4488 Primary

  the transducer being a phased array · CPC title

• A61B8/085

  for locating body or organic structures, e.g. tumours, calculi, blood vessels, nodules · CPC title

• A61B8/4483

  characterised by features of the ultrasound transducer · CPC title

• A61B8/0833

  involving detecting or locating foreign bodies or organic structures · CPC title