Ultra wide band microwave imaging method for detecting breast multiple tumors

A microwave imaging and ultra-broadband technology, applied in the field of biomedical detection, can solve the problems that the signal response intensity is not at the same level, the dielectric properties of surrounding tissues are different, and the display cannot be displayed.

Inactive Publication Date: 2013-12-25
TIANJIN UNIV
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Problems solved by technology

However, due to the different depths of different tumors in the breast, the dielectric properties of their surrounding tissues are different, resulting in different signal response strengths returned by different tumors.
In this way, some tumor signals will be processed as noise by the imaging algorithm and cannot be displayed in the image

Method used

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  • Ultra wide band microwave imaging method for detecting breast multiple tumors
  • Ultra wide band microwave imaging method for detecting breast multiple tumors
  • Ultra wide band microwave imaging method for detecting breast multiple tumors

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Embodiment Construction

[0024] The method of the present invention will be described in detail below in conjunction with the examples.

[0025] (1) Cover the whole breast with the antenna array, assuming that there are a total of N antenna elements. During the detection process, let one of the antennas transmit a Gaussian pulse signal, and the remaining N-1 antennas receive the signal. This process is repeated so that each antenna performs a signal transmission. The collected signal was imaged by confocal algorithm, and the image was used as a preliminary diagnostic image. The confocal algorithm is a commonly used imaging algorithm in ultra-wideband microwave imaging. By superimposing the signal intensities received by different antennas in time-shifted values, and using the superimposed value as the "energy value" of the pixel point, it can be judged that a certain Whether there is a strong reflective object at the place, reference [1] X.Li, S.C.Hagness, A confocal microwave imaging algorithm for ...

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Abstract

The invention belongs to the technical field of biomedical detection and relates to an ultra wide band microwave imaging method for detecting breast multiple tumors. The method comprises acquiring detection signals of antenna arrays, and performing imaging through a confocal algorithm to obtain a primary diagnosis image; selecting pixel points with energy higher than set thresholds to serve as suspected tumor volumes; finding the center Pi of each suspected tumor volume; selecting an antenna Amin, the distance from which to Pi is minimum; selecting enough antenna formed arrays from the periphery with Amin serving as the center; processing the antenna arrays meeting conditions through the confocal algorithm, and determining whether tumors exist in the suspected tumor volumes; performing further imaging on the confirmed tumor volumes to obtain low-noise and high-definition images, and recognizing positions of tumors from the images. According to the method, breast multiple tumors can be detected conveniently, rapidly and effectively.

Description

Technical field [0001] The technical field of biomedical detection of the present invention relates to a microwave imaging method. Background technique [0002] Breast cancer is the malignant tumor disease with the highest incidence rate in women, and its mortality rate ranks first in the mortality rate of malignant tumors in women. The diagnosis of early breast tumors is undoubtedly of decisive significance for improving the treatment rate of breast disease and the long-term survival rate of patients. Currently commonly used detection methods for early breast cancer include mammography, ultrasound imaging technology, computed tomography, nuclear magnetic resonance imaging technology, thermal imaging detection, etc., but many methods have certain shortcomings, such as radiation damage to the human body, The imaging contrast is low and the cost is high. The principle of ultra-broadband electromagnetic wave detection of breast cancer is that different biological tissues have...

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Application Information

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IPC IPC(8): A61B5/00
Inventor 肖夏宋航王宗杰
Owner TIANJIN UNIV
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