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Medical ultrasonic fundamental wave and harmonic wave image fusion method

An image fusion and fundamental wave technology, which is applied in the field of medical ultrasound fundamental wave and harmonic image fusion, can solve the problems of blurred edges of harmonic imaging, inability to meet medical diagnosis, and low image quality

Inactive Publication Date: 2010-10-13
HARBIN INST OF TECH AT WEIHAI
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Problems solved by technology

[0007] Aiming at the problem that the quality of the image obtained by simply using the fundamental wave or harmonic imaging mode is not high enough to meet the actual needs of medical diagnosis, the present invention proposes a fusion method of fundamental wave and harmonic image of medical ultrasound. Based on the characteristics of harmonic and harmonic images, the Curvelet method is used to fuse ultrasonic fundamental and harmonic images to obtain images with clear tissue boundaries and interiors, which overcomes the shortcomings of ordinary contrast harmonic imaging, such as blurred edges and difficult tissue positioning, to obtain High Quality Ultrasound Images

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  • Medical ultrasonic fundamental wave and harmonic wave image fusion method
  • Medical ultrasonic fundamental wave and harmonic wave image fusion method

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[0031] Refer to attached figure 1 As shown, the specific implementation steps of the medical ultrasound fundamental wave and harmonic image fusion method based on Curvelet are as follows:

[0032] (1) Acquire fundamental and harmonic images. In this paper, the ultrasonic imaging equipment developed by Harbin Institute of Technology was used to obtain contrast-enhanced fundamental and harmonic images. In order not to affect the vertical resolution of the fused image, the fundamental signal and the harmonic signal must be in the same frequency band. The method used here is to make the ultrasonic probe transmit twice consecutively at the same physical position, and the frequency of the first transmission is f 0 , receive and extract the center frequency as 2f 0 The harmonic signal of the second emission frequency is 2f 0 , receive and extract the center frequency as 2f 0 The fundamental signal, so the center frequency of the fundamental signal and the harmonic signal are bot...

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Abstract

The invention provides a medical ultrasonic fundamental wave and harmonic wave image fusion method, which comprises the following steps: firstly, performing Curvelet decomposition of an ultrasonic fundamental wave and harmonic wave image to obtain a Curvelet coefficient; secondly, performing fusion treatment of the Curvelet coefficient, and obtaining a fusion Curvelet coefficient by using a weighted average method for a low-frequency part and an absolute value maximum selection method for a high-frequency part; and thirdly, reconstructing a fusion result image by Curvelet inverse transformation according to the Curvelet coefficient obtained by the fusion treatment. In the invention, according to the characteristics of the ultrasonic fundamental wave and harmonic wave image, the fusion of the ultrasonic fundamental wave and harmonic wave image is performed by using a Curvelet method to obtain an image with clear organizational boundaries and interior, the problems of blurred edges, difficult organization positioning and the like of common imaging harmonic wave imaging are solved, and the method can be widely used in the processing of medical ultrasonic images.

Description

technical field [0001] The present invention relates to the field of medical ultrasound image processing, in particular to a medical ultrasound fundamental wave and harmonic image fusion method. Background technique [0002] As one of the important forms of medical imaging, medical ultrasound images play an important role in clinical diagnosis and medical research. Early ultrasound imaging equipment transmits and receives signals of the same frequency for imaging. This mode is called fundamental wave imaging. In recent years, with the emergence of imaging and other technologies, harmonic imaging technology that uses transducers to receive harmonic signals in ultrasonic imaging systems has been developed. For example, contrast harmonic imaging technology is to enhance the blood flow signal of the human body through intravenous injection of ultrasound contrast agent, and use harmonic imaging to observe the microvascular perfusion information of tissues in real time and dynami...

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Application Information

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IPC IPC(8): G06T5/50
Inventor 马立勇孙明健冯乃章马家辰
Owner HARBIN INST OF TECH AT WEIHAI
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