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Biological tissue electrical impedance characteristic parameter abnormity detection method

A technology of biological tissue and characteristic parameters, applied in the measurement of resistance/reactance/impedance, measurement device, measurement of electrical variables, etc. Quickly determine the effect of simple calculation

Active Publication Date: 2017-10-20
SHENZHEN DELICA MEDICAL EQUIP CO LTD
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Problems solved by technology

[0003] However, most of the current detection methods need to compare the dielectric constant and conductivity of biological tissue with the literature, and in order to obtain the dielectric constant and conductivity, the size of biological tissue must be limited, which greatly limits its application field , which is not conducive to fast and accurate analysis and detection of electrical properties of biological tissues

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  • Biological tissue electrical impedance characteristic parameter abnormity detection method
  • Biological tissue electrical impedance characteristic parameter abnormity detection method

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Embodiment Construction

[0019] A method for detecting abnormalities in characteristic parameters of electrical impedance of biological tissue according to the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0020] A method for detecting the abnormality of the characteristic parameter of biological tissue electrical impedance of the present invention uses the original data of electrical impedance of the measured biological tissue collected by the electrical impedance measurement system, combined with the known data of the dielectric constant and conductivity of the biological tissue, to calculate the specific frequency Or the characteristic constants and parameters of the electrical impedance of biological tissue in a specific frequency band, and obtain the deviation coefficient of the electrical impedance characteristic parameter of the measured biological tissue at a specific frequency or the frequency band deviation coefficient ...

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Abstract

The invention provides a biological tissue electrical impedance characteristic parameter abnormity detection method, which is characterized by collecting a resistance value and a reactance value in electrical impedance of a measured biological tissue under any frequency; obtaining a dielectric constant and conductivity of a similar normal biological tissue through table look-up at the frequency above; calculating an electrical impedance characteristic deviation coefficient of the measured biological tissue; comparing the electrical impedance characteristic deviation coefficient and a preset electrical impedance characteristic deviation coefficient threshold value, and when the electrical impedance characteristic deviation coefficient is larger than the preset electrical impedance characteristic deviation coefficient threshold value, judging that the electrical impedance characteristic of the measured biological tissue is abnormal at the frequency; in any frequency band, selecting N frequency points and repeating the processes above to obtain M abnormal frequency points, M<=N, and calculating a frequency band deviation coefficient of the measured biological tissue in any frequency band; and comparing the frequency band deviation coefficient with a preset frequency band deviation coefficient threshold value, and when the frequency band deviation coefficient is larger than the preset frequency band deviation coefficient threshold value, judging that the measured biological tissue is abnormal in electrical impedance characteristics in the frequency band. The method can realize fast judgment of the electrical impedance characteristic parameter abnormity of the biological tissue.

Description

technical field [0001] The invention relates to a biological tissue electrical impedance detection. In particular, it relates to a detection method for the abnormality of the characteristic parameter of electrical impedance of biological tissue. Background technique [0002] Biological tissue electrical impedance is a physical quantity that can reflect the electrical properties of the entire biological tissue, cell or organelle, and has broad prospects in the field of biophysics research. [0003] However, most of the current detection methods need to compare the dielectric constant and conductivity of biological tissue with the literature, and in order to obtain the dielectric constant and conductivity, the size of biological tissue must be limited, which greatly limits its application field , which is not conducive to fast and accurate analysis and detection of electrical properties of biological tissues. Contents of the invention [0004] The technical problem to be s...

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Application Information

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IPC IPC(8): G01R27/02
CPCG01R27/02
Inventor 殷涛李颖刘志朋
Owner SHENZHEN DELICA MEDICAL EQUIP CO LTD
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