Method and device for ultrasonic imaging by synthetic focusing

a synthetic focusing and ultrasonic imaging technology, applied in ultrasonic/sonic/infrasonic image/data processing, instruments, tomography, etc., can solve the problems of deterioration of spatial resolution and contrast, insufficient frame rate, temporal resolution, etc., and achieve high contrast, high frame rate, and resolution high

Active Publication Date: 2017-11-23
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Benefits of technology

The patented technology allows for better quality imaging with higher resolution and faster frames-performance compared to traditional methods like X-rays or MRI scans. This means that it can be used in various fields such as medical diagnosis, security screenings, and biomedical researches.

Problems solved by technology

This patent describes different methods for enhancing the quality of ultrasonic (US) images. These techniques include but are limited in terms of achieving complete dynamic focus in both transmission and reception modes. To address this problem, new synthetic focusing methods called SMASHISE® were developed. They use multiple small elements per second to enhance the resolution and contrast of US images. By dividing the entire image into smaller sub-apertments, they also allow for faster processing speeds due to less energy needed compared to traditional methods. Additionally, the resulting frames from the reduced resolution of the acquired images may still show lower levels of detail than those achieved through traditional methods. Overall, these technical improvements help make ultrasonic imaging systems become more effective and cost-effective.

Method used

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  • Method and device for ultrasonic imaging by synthetic focusing
  • Method and device for ultrasonic imaging by synthetic focusing
  • Method and device for ultrasonic imaging by synthetic focusing

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Embodiment Construction

[0028]In the following description, numerous details are presented so as to provide more thorough understanding of the present invention. However, those skilled in the art can appreciate that the following description only relates to preferable embodiments of the present invention, and the present invention may be implemented without one or more of these details. Additionally, some technical features well known in the art are not described so as to avoid confusion with the present invention.

[0029]The compressed sensing theory states that if a signal xεRn is sparse or compressible in a certain domain, it can be recovered from a signal with a much lower sampling frequency than the Nyquist sampling frequency with high probability. Because of this nature, compressed sensing may be used for data compression, channel coding, inverse problem solving and data acquisition. In the field of ultrasound, application of the compressed sensing theory focuses mainly on the problem of reducing the data

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Abstract

Provided are a method and device for ultrasonic imaging by synthetic focusing. The method comprises: exciting a plurality of matrix elements of an ultrasonic probe to transmit plane waves many times, wherein transmitting apodizations at the time of every transmission of the plane waves by the plurality of matrix elements correspond to the respective lines in a measurement matrix in which elements are randomly distributed; after every transmission of the plane waves, exciting all the matrix elements of the ultrasonic probe to receive echo signals, in order to obtain channel data; recovering a synthetic focusing channel data set by use of a compressed sensing reconstruction algorithm according to a channel data set and the measurement matrix; and subjecting the synthetic focusing channel data set to beamforming so as to generate an ultrasonic image.

Description

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Claims

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Application Information

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Owner TSINGHUA UNIV
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