Method for improving two-dimensional array real-time ultrasonic body imaging quality

An imaging quality, two-dimensional array technology, applied in ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, infrasonic diagnosis, etc., can solve problems such as reducing imaging quality

Active Publication Date: 2014-02-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Generally speaking, the existing array design methods focus on how to design the number of array elements and control channels so that the array design can have better main and side lobe characteristics and enable real-time three-dimensional imaging, but they Most come at the expense of sidelobes, which degrades image quality

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  • Method for improving two-dimensional array real-time ultrasonic body imaging quality
  • Method for improving two-dimensional array real-time ultrasonic body imaging quality
  • Method for improving two-dimensional array real-time ultrasonic body imaging quality

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Embodiment Construction

[0080] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0081] Below at first explain and illustrate with regard to the technical terms of the present invention:

[0082] CF: English is coherence factor, which is called coherence factor method. CF is to use the ratio of the coherent sum and the incoherent sum of the signals received by the receiving array to weight the received signal, so as to achieve the purpose of suppressing side lobes. For the signal from the focus center, the ratio of the coherent sum to the incoherent sum is 1, so weighting the received signal is equivalent to not processing the signal there. For the signal from the non-focus c...

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Abstract

The invention discloses a method for improving the two-dimensional array real-time ultrasonic body imaging quality. The method includes steps of setting transmitting and receiving array layout of area arrays; initializing parameters of the area arrays; converting polar coordinate forms of ultrasonic scanning areas into rectangular coordinate forms; approximating transmitting ultrasonic fields of the area arrays by the aid of far-field continuous waves to acquire spatial pulse response of the area arrays; performing CF (coherent factor) processing on received ultrasonic signals; acquiring bidirectional pulse echo response of the area arrays according to the processed ultrasonic signals; performing normalization logarithmic compression transformation on the bidirectional pulse echo response. The method has the advantages that the quantity of array elements of the area arrays and the quantity of channels of the area arrays can be reduced, the complexity of front-end circuits of three-dimensional ultrasonic systems can be decreased, the quality of three-dimensional images can be improved, and the purpose of real-time body imaging can be achieved.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic imaging, and more particularly relates to a method for improving the quality of two-dimensional array real-time ultrasonic volume imaging. Background technique [0002] At present, two-dimensional ultrasound has been widely used in clinical applications because of its non-radiation and low price. However, the observation of two-dimensional ultrasound images must rely on the experience and professional knowledge of doctors, and cannot vividly represent the three-dimensional anatomical structure of human organs. Therefore, the study of three-dimensional ultrasound can improve the time and space resolution of ultrasound images and help to realistically display the anatomical orientation, neighbor relationship, activity law and hemodynamic changes of various structures of human organs. Navigation is important. The existing methods for three-dimensional ultrasound imaging mainly include: 1) mechan...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
Inventor 尉迟明丁明跃贾艳平许梦玲李旭
Owner HUAZHONG UNIV OF SCI & TECH
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