Imaging of a body part using sounds

Patent metadata

Field	Value
Publication number	US-12245891-B2
Application number	US-201916238934-A
Country	US
Kind code	B2
Filing date	Jan 3, 2019
Priority date	Jan 3, 2018
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

Embodiments of the present disclosure relate to imaging a body part using sounds. In embodiments, a system comprises a motion sensor and a processing device communicatively coupled to the motion sensor. The motion sensor is configured to sense an acceleration wave produced by a sound emitted by a source and generate acceleration measurements in response to sensing the acceleration wave, wherein the source is associated with the body part of a subject. The processing device is configured to receive the acceleration measurements and determine a location of the source using a location of the motion sensor and the acceleration measurements. In addition, the processing device is configured to image the body part of the subject using the determined location of the source and the acceleration measurements.

First claim

We claim:

1. A system for imaging an organ, comprising:
an acceleration sensor configured to sense an acceleration wave emitted by a source and to generate acceleration measurements in response to sensing the acceleration wave, wherein the source is the organ of a subject, wherein the organ is a heart; and
a processing device communicatively coupled to the acceleration sensor, the processing device configured to:
receive the acceleration measurements;
determine a location of the source using a location of the acceleration sensor and the acceleration measurements; and
generate an image of the organ of the subject using the determined location of the source and the acceleration measurements.

2. The system of claim 1 , wherein the acceleration sensor comprises a plurality of acceleration sensors positioned at different locations relative to the source and wherein each acceleration sensor generates acceleration measurements used to generate the image of the organ.

3. The system of claim 1 , wherein, to determine the location of the source, the processing device is configured to:
determine an original amplitude of the acceleration wave; and
determine the location of the source using the original amplitude.

4. The system of claim 1 , wherein the processing device is configured to:
apply band-pass filters to the acceleration wave to produce a plurality of acceleration band measurements; and
determine the location of the source using the plurality of acceleration band measurements.

5. The system of claim 1 , further comprising:
a thumper configured to produce a sound wave for the source,
wherein the acceleration wave is indicative of the sound wave propagating through the organ before being sensed by the acceleration sensor.

6. The system of claim 1 , wherein the image of the organ comprises at least one of: a position matrix or a structural image of the organ of the subject.

7. The system of claim 6 , wherein the acceleration wave is sensed at a plurality of times and wherein, to generate the image of the organ, the processing device is configured to:
determine an acceleration matrix of the acceleration wave using the determined location of the source;
determine a velocity matrix using the acceleration matrix, the acceleration wave sensed at a first time, and the acceleration wave sensed at a second time;
determine the position matrix using the velocity matrix and the acceleration wave sensed at a third time; and
generate the image of the organ of the subject comprising the position matrix.

8. The system of claim 6 , wherein to generate the image of the organ, the processing device is configured to:
determine a dampening coefficient matrix; and
produce the structural image using the dampening coefficient matrix.

9. A method for imaging an organ, the method comprising:
receiving acceleration measurements produced by an acceleration sensor that sensed an acceleration wave emitted by a source, wherein the source is the organ of a subject, wherein the organ is a heart;
determining a location of the source using a location of the acceleration sensor and the acceleration measurements; and
generating an image of the organ of the subject using the determined location of the source and the acceleration measurements.

10. The method of claim 9 , wherein the acceleration sensor comprises a plurality of acceleration sensors positioned at different locations relative to the source and wherein each acceleration sensor generates acceleration measurements used to generate the image of the organ.

11. The method of claim 9 , wherein determining the location of the source comprises:
determining an original amplitude of the acceleration wave; and
determining the location of the source using the original amplitude.

12. The method of claim 9 , the method further comprising:
applying band-pass filters to the acceleration wave to produce a plurality of acceleration band measurements; and
determining the location of the source using the plurality of acceleration band measurements.

13. The method of claim 9 , wherein receiving the acceleration measurements comprises:
receiving the acceleration measurements produced by the acceleration sensor that sensed the acceleration wave indicative of a sound wave produced by a thumper for the source and propagating through the organ before being sensed by the acceleration sensor.

14. The method of claim 9 , wherein generating the image of the organ comprises generating at least one of: a position matrix or a structural image of the organ of the subject.

15. The method of claim 14 , wherein the acceleration wave is sensed by the acceleration sensor at a plurality of times and wherein generating the image of the organ comprises:
determining an acceleration matrix of the acceleration wave using the determined location of the source;
determining a velocity matrix using acceleration matrix and the acceleration wave sensed at a first time and the acceleration wave sensed at a second time;
determining the position matrix using the velocity matrix and the acceleration wave sensed at a third time; and
generating the image of the organ of the subject comprising the position matrix.

16. The method of claim 14 , wherein generating the image of the organ comprises:
determining a dampening coefficient matrix; and
producing the structural image using the dampening coefficient matrix.

Assignees

• Cardiac Pacemakers Inc

Inventors

• Shute Jonathan B
• Thakur Pramodsingh H
• Mi Bin
• Clark Bryan A
• An Qi
• Wariar Ramesh
• Siejko Krzysztof Z

Classifications

• A61B8/543

  involving acquisition triggered by a physiological signal · CPC title

• A61B8/0883

  for diagnosis of the heart · CPC title

• A61B7/04

  Electric stethoscopes · CPC title

• A61B5/1102

  Ballistocardiography · CPC title

• A61B7/00

  Instruments for auscultation · CPC title