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Eigen-space decomposition-based multi-apodization fast adaptive beam-forming method

A technology of adaptive beam and synthesis method, applied in the re-radiation of sound waves, radio wave measurement systems, and utilization of re-radiation, etc., can solve problems such as poor image contrast and spatial resolution

Active Publication Date: 2017-06-13
XI AN JIAOTONG UNIV
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Problems solved by technology

[0014] Aiming at the problems of poor image contrast and spatial resolution in current ultrasound images, the purpose of the present invention is to provide a multiple apodization fast adaptive beamforming method based on feature space decomposition

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  • Eigen-space decomposition-based multi-apodization fast adaptive beam-forming method

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Embodiment Construction

[0056] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0057] The multi-apodization fast adaptive beamforming method based on feature space decomposition according to the present invention is still based on MV beamforming, and the implementation scheme is as follows:

[0058] 1. Multiple apodization fast one-dimensional adaptive beamforming method based on eigenspace decomposition

[0059] The linear array transducer emits plane waves to the imaging area, and when it encounters the target, it scatters to generate echoes in the opposite direction to the emission direction; the data acquisition card is used to sample the ultrasonic echo signals and convert them into radio frequency data, and then use the data acquisition card to sample the ultrasonic echo signals. The radio frequency data is stored and transmitted to the computer; according to the position of the target point, the time delay of the ec...

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Abstract

The invention provides an eigen-space decomposition-based multi-apodization fast adaptive beam-forming method. The method comprises the steps of obtaining weight vectors of various channels by adopting EIBMV beam-forming in advance in a preset imaging environment; and carrying out beam-forming by adopting a principal component obtained through principal component analysis of the weight vectors as a real EIBMV weight, wherein the weight vectors which are determined in advance can be adopted as the beam-forming weights, so that the calculation process is simplified. EIBMV beam-forming for improving the contrast, PCA for reducing the calculated quantity and DAX for improving the image resolution and NSI are combined together, so that one-dimensional and one-dimensional eigen-space decomposition-based multi-apodization fast adaptive beam-forming method is achieved, and the problems of poor image contrast and poor resolution of an image obtained through MV beam-forming are solved.

Description

technical field [0001] The invention belongs to the field of ultrasound imaging, and is specifically aimed at the beam synthesis process of ultrasound imaging, aiming to provide a multiple apodization fast self-adaptation based on feature space decomposition that can ensure the quality of ultrasound images while reducing the complexity of the calculation process and improving imaging efficiency Beamforming method. Background technique [0002] In modern ultrasound equipment, there are two factors that determine the final imaging quality. One is the hardware level of the equipment, and the other is the imaging method. The most critical technology in the imaging process is beamforming. Compared with imaging methods, the upgrading of hardware facilities requires a high level of craftsmanship, which also means an increase in cost requirements. Therefore, research on new and efficient beamforming methods has always been a hot spot in the field of ultrasound imaging. [0003] The...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/89
CPCG01S15/89
Inventor 万明习柏晨纪美伶
Owner XI AN JIAOTONG UNIV
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