Method and system for determining contact along a surface of an ultrasound probe

• US 8,002,704 B2
• Filed: 05/25/2005
• Issued: 08/23/2011
• Est. Priority Date: 05/25/2005
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Torp, Hans Garmann, Lovstakken, Lasse, Orderud, Fredrik
• Primary Examiner(s): Casler; Brian
• Assistant Examiner(s): Shahrestani; Nasir
• Application Number:
  US11/136,977
• Publication Number:
  US 20070010742A1
• Time in Patent Office: 2,281 Days
• Field of Search: 600407-480
• US Class Current: 600/437
• CPC Class Codes: A61B 5/6843 Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61B 8/4281 characterised by sound-transmitting media or devices for coupling the transducer to the tissue
• CPC Class Codes: A61B 8/429 characterised by determining or monitoring the contact between the transducer and the tissue
• CPC Class Codes: Y10S 128/916 Ultrasound 3-D imaging

Abstract

A method and system for determining contact along a surface of an ultrasound probe are provided. The method includes frequency analyzing ultrasound signals received by the ultrasound probe and displaying indicators of acoustic contact of the ultrasound probe with an object based on the frequency analysis.

Claims

1. A method for determining acoustic contact of an ultrasound probe with an object, said method comprising:

receiving radio frequency (RF) scanline data;

utilizing the RF scan line data to generate a lateral map;

calculating a lateral frequency spectrum using the lateral map;

applying at least one of a temporal and a spatial averaging filter to the lateral frequency spectrum to determine acoustic contact of the ultrasound probe with the object;

displaying indicators of acoustic contact of the ultrasound probe with an object based on the frequency analysis.

2. A method in accordance with claim 1 further comprising utilizing the RF scan line data to generate a lateral map that includes a set of Fourier coefficients derived from a radial Fourier transform of each ultrasound beam produced by the ultrasound probe.

3. A method in accordance with claim 1 further comprising performing dynamic compression to the filtered lateral frequency spectrum.

4. A method in accordance with claim 1 further comprising setting at least one of a gain and a dynamic range of the lateral frequency spectrum.

5. A method in accordance with claim 1 further comprising displaying indicators of the acoustic contact along a probe surface of the ultrasound probe contacting the object.

6. A method in accordance with claim 1 further comprising displaying indicators representative of energy levels along a probe surface of the ultrasound probe contacting the object.

7. A method in accordance with claim 5 further comprising configuring the indicators to indicate a direction to move the ultrasound probe for increased acoustic contact.

8. A method in accordance with claim 5 further comprising configuring the indicators based on a type of the ultrasound probe.

9. A method in accordance with claim 5 wherein the indicators comprise color coded elements forming one of a color-coded histogram and a color-coded contact map.

10. A method in accordance with claim 5 further comprising updating the indicators based on movement of the ultrasound probe along the object.

11. A method in accordance with claim 5 wherein the indicators are representative of image quality.

12. An ultrasound system comprising:

an ultrasound probe configured to generate radio frequency (RF) scanline data;

a processor configured to;

receive the RF scanline data;

utilize the RF scan line data to generate a lateral map;

calculate a lateral frequency spectrum using the lateral map;

apply at least one of a temporal and a spatial averaging filter to the lateral frequency spectrum to determine acoustic contact of the ultrasound probe with the object; and

a display configured to display indicators of the acoustic contact of the ultrasound probe with an object.

13. The ultrasound system of claim 12 wherein the indicators represent energy levels along a probe surface of the ultrasound probe contacting the object.

14. The ultrasound system of claim 12 wherein the indicators indicate a direction to move the ultrasound probe for increased acoustic contact.

15. The ultrasound system of claim 12 wherein the indicators are based on a type of the ultrasound probe.

16. The ultrasound system of claim 12 wherein the indicators comprise color coded elements forming one of a color-coded histogram and a color-coded contact map.

17. The ultrasound system of claim 12 wherein the indicators are updated based on movement of the ultrasound probe along the object.

18. The ultrasound system of claim 12 wherein the indicators are representative of image quality.