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Propagation-medium-modification-based reverberated-signal elimination

A technology of propagation medium and medium, applied in the re-radiation of sound waves, utilization of re-radiation, medical science, etc., can solve the problems of clutter axial resolution, loss, etc.

Inactive Publication Date: 2012-05-23
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Retroreflection artifacts manifest themselves as high-level image clutter and loss of axial resolution

Method used

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  • Propagation-medium-modification-based reverberated-signal elimination

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Embodiment Construction

[0039] Presented herein are hardware, software, and associated methods related to ultrasound probe motion and its immediate adjoining propagation medium for correcting acquired echo data to reduce content from ultrasound that has undergone at least one reflection from the probe surface . The reflected ultrasound is retroreflected between the probe surface and the retroreflective layer. In some embodiments, corrections are performed to remove corresponding retroreflection artifacts from the imaging. "Propagation medium" is defined herein as the propagation medium or propagating medium adjoining layer through which retroreflection occurs. In some embodiments, after the collection of echo radio frequency data is acquired, the propagation medium is modified in preparation for the next ultrasound application. During this next application, according to an embodiment of the present invention, the retroreflected signal is more affected by the modification than the non-retroreflected...

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Abstract

Acquired echo data is corrected to reduce content from ultrasound that has undergone at least one reflection off the probe surface, for example, to reduce corresponding reverberation artefacts from imaging. In some embodiments, the propagation medium, i.e., layer or adjoining layers, through which the reverberation occurs, is, after a set of echo radiofrequency data (404, 408) has been acquired, modified in preparation for a next application of ultrasound. During that next application, it is the reverberating ultrasound signals (424), according to embodiments of the invention, that are more affected by the modification than are the non-reverberating, i.e., direct signals (420). This difference in effect is due, for example, to greater overall time of flight through the modified medium on account of reverberation in the propagation path.

Description

technical field [0001] The present invention relates to correction of ultrasound imaging data and, more particularly, to data generation due to ultrasound retroreflection. Background technique [0002] Retroreflection is a significant problem in many ultrasound imaging applications. This is especially true when imaging through stratified media in the body (eg, at bone in transcranial imaging, intercostal tissue in intercostal imaging, or fat in abdominal imaging) to a strong impedance discontinuity. It is difficult to distinguish retroreflected ultrasound from the signal directly backscattered by the medium of interest. The receive beamforming process does not differentiate between these two types of input signals. Retroreflection artifacts manifest themselves as high-level image clutter and loss of axial resolution. SUMMARY OF THE INVENTION [0003] The present invention aims to overcome or alleviate the above-mentioned limitations of the prior art. [0004] The aspe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/52G01S15/89
CPCG01S7/52077G01S15/8945A61B8/0816
Inventor F·G·G·M·维尼翁W·T·史J·E·鲍尔斯E·G·勒杜列斯库
Owner KONINKLIJKE PHILIPS ELECTRONICS NV