Electrical impedance imaging method of ultrasonic-synergy biological tissue

Abstract

The invention discloses an electrical impedance imaging method of an ultrasonic-synergy biological tissue. The electrical impedance imaging method comprises that a plurality of electric excitation leads and detection guide leads are arranged on the surface of the biological tissue, and an ultrasonic excitation source is adopted to generate ultrasonic waves and the ultrasonic waves are focused in the biological tissue through ultrasonic drive; the ultrasonic waves focused in the biological tissue are located in a continuous mode, and integral or partial scanning to the biological tissue is finished; signals are collected, the ultrasonic waves are focused at a certain spatial position, and a high-frequency signal corresponding to electrical impedance of the spatial position is generated, the signals are collected through the multi-channel detection leads, amplified, filtered, and then output; after focusing and scanning of the ultrasonic waves are finished, a voltage signal after being collected is guided in a computer, and a signal is obtained according to the collected integral scanning and partial scanning to the biological tissue, and electrical impedance distribution of the biological tissue is calculated and rebuilt. Through the electrical impedance imaging method of the ultrasonic-synergy biological tissue, a high-precision and high-resolution electrical impedance image can be obtained.

Description

technical field [0001] The invention relates to the field of biological tissue imaging, in particular to an ultrasound-assisted biological tissue electrical impedance imaging method. Background technique [0002] Medical images are intuitive, vivid and informative, and play an important role in clinical diagnosis. With the advancement of medical imaging technology, medical imaging has developed from anatomical structure imaging to functional imaging, that is, medical images can not only display the morphological changes of the anatomical structure of the disease, but also reflect the functions of the body's organs and related physiological and biochemical changes, and can detect The abnormality of its physiological activities provides important information for disease diagnosis and promotes the progress and development of medicine. [0003] Traditional Electrical Impedance Tomography (Electrical Impedance Tomography, EIT) is based on the physical phenomenon that different h...

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Problems solved by technology

[0007] 2. Less information

The so-called inherent morbidity means that the boundary voltage is not sensitive to the change of the electrical parameters in the center of the analysis area, and the morbidity of the reconstruction process means that the reconstructed image is easily affected by the error of

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