Method and system for processing beamformed data preliminary class

Patent metadata

Field	Value
Publication number	US-11977189-B2
Application number	US-202218064096-A
Country	US
Kind code	B2
Filing date	Dec 9, 2022
Priority date	Dec 10, 2021
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Examples relate to a method for processing beamformed data of a medium. The beamformed data includes a first set of beamformed data associated with a first spatial region and a second set of beamformed data associated with a second spatial region, and the method includes estimating the clutter caused by the second spatial region at the first set.

First claim

The invention claimed is:

1. A method for processing beamformed data of a medium, the method comprising:
obtaining a first set of beamformed data associated with a first spatial regions; and
obtaining a second set of beamformed data associated with a second spatial region, the second set of beamformed data being isochronous with the first set of beamformed data, and
estimating clutter caused by the second spatial region at the first set.

2. The method according to claim 1 , further comprising:
selecting the first set and determining the second set as a function of the location of the associated second spatial region, wherein the second spatial region is located such that the first set is susceptible for clutter generated at the second spatial region, and/or
selecting the second set and determining the first set as a function of the location of the associated first spatial region, wherein the first spatial region is located such that the first set is susceptible for clutter generated at the second spatial region, and/or
compensating the estimated clutter at the first set, and/or
removing the clutter at the first set.

3. The method according to claim 1 , wherein at least one of:
the clutter is estimated as a function of at least one of the location of the first spatial region and the location of the second spatial region,
the clutter is estimated as a function of the second set and/or the amplitude of the second set, and
the second set is considered for estimating the clutter, when the amplitude of the second set exceeds a predefined threshold.

4. The method according to claim 2 , wherein:
determining the second set of beamformed data comprises:
determining a plurality of second sets of beamformed data respectively associated with a plurality of second spatial regions that are located such that the first set is susceptible for clutter generated at the second spatial regions, and estimating the clutter at the first set comprises:
estimating a plurality of clutter contributions respectively associated to the second sets, the clutter at the first set being a function of the plurality of clutter contributions.

5. The method according to claim 1 , wherein the clutter at the first spatial region is estimated by a linear combination of the plurality of clutter contributions at the first spatial region.

6. The method according to claim 1 , further comprising before selecting at least one of the first and the second set:
processing ultrasound signal data of the medium to obtain the beamformed data.

7. The method according to claim 1 , further comprising before processing ultrasound signal data or selecting beamformed data:
transmitting an emitted sequence of ultrasound waves into the medium, and
receiving a response sequence of ultrasound waves from the medium, wherein the ultrasound signal data are based on the response sequence of ultrasound waves.

8. The method according to claim 1 , wherein at least one of the first and second set is further determined and/or the clutter is further estimated as a function of at least one of:
the geometry of a transducer device used for acquiring data of the medium on which the beamformed data are based,
the arrangement and/or the size of the single transducer elements of the transducer device,
at least one of the emission and receive aperture of the transducer device,
the emission duration,
the wavelength and/or type of emission pulse on which the beamformed data is based,
the geometry of the emitted wave front, and
a predetermined speed of sound model of the medium.

9. The method according to claim 1 , wherein at least one of:
each set of beamformed data is associated with at least one pixel or voxel and
the beamformed data are in-phase and quadrature phase, IQ, data and/or radio frequency, RF, data.

10. Method according to claim 1 , wherein
at least one of the first set, the second set, the first spatial region and the second spatial region is predetermined.

11. The method according to claim 1 , wherein the method is performed for a plurality of first spatial regions of the medium, in parallel and/or in series.

12. The method according to claim 1 , wherein the method is performed for the first spatial region in several iterations, wherein at each iteration modified beamformed data is obtained by compensating the estimated clutter, wherein the modified beamformed data obtained in a first iteration is used in a subsequent second iteration.

13. A method of training an artificial intelligence-based model (AI) based on an estimated clutter according to the method of claim 1 .

14. A method for processing beamformed data of a medium, the method comprising: using the AI based model of claim 13 to estimate an amount clutter and/or compensate an estimated clutter.

15. A computer program comprising computer-readable instructions which when executed by a data processing system cause the data processing system to carry out the method according to claim 1 .

16. A system for processing beamformed data of a medium, the system comprising a processor and a memory, the beamformed data comprising a first set of beamformed data associated with a first spatial region and a second set of beamformed data associated with a second spatial region, wherein the processor is configured to:
determine the first set of beamformed data;
determine the second set of beamformed data, the second set of beamformed data being isochronous with the first set of beamformed data; and
estimate the clutter caused by the second spatial region at the first set based on the determined first set of beamformed data and second set of beamformed data.

Assignees

• Supersonic Imagine

Inventors

• Fraschini Christophe
• Lambert William

Classifications

• G01S7/52077 Primary

  with means for elimination of unwanted signals, e.g. noise or interference · CPC title

• G01S15/8918

  the array being linear · CPC title

• A61B8/5269

  involving detection or reduction of artifacts · CPC title

• G01N29/44 Primary

  Processing the detected response signal {, e.g. electronic circuits specially adapted therefor (digital signal processing per se G06F17/00)} · CPC title

• G01S7/52046 Primary

  Techniques for image enhancement involving transmitter or receiver (image enhancement by image data processing G06T5/00) · CPC title