A linear array-based ultrasonic tomography system and method

Abstract

The invention discloses a linear-array-based ultrasonic tomographic imaging system and method. The system comprises a control module, a closed type supersonic signal emission and receiving module formed by linear ultrasonic sensor array, a signal acquisition module, a signal transmission module, a signal processing module, and an image reconstruction and display module. The control module is connected with the signal emission and receiving module, the signal acquisition module and the signal transmission module and is used for controlling an ultrasonic emission offset angle and a signal acquisition and transmission sequence. The signal transmission module connected with a signal acquisition device and a rear-end processing device is used for realizing real-time data transmission. With the system and method, defects of complex signal transmission module ring annular array processing, high data handling capacity, and high system control complexity and the like can be overcome; the manufacturing cost can be effectively reduced; and promotion of an ultrasonic CT breast cancer screening system to clinic application can be realized conveniently.

Description

technical field [0001] The invention belongs to the technical field of medical ultrasonic tomography, and relates to an ultrasonic tomography system and an imaging algorithm based on a linear sensor array suitable for early screening of breast cancer. Background technique [0002] Research results have confirmed that the acoustic parameters of human cancerous tissue are different from those of normal tissue. In particular, when breast tissue is cancerous, its tissue density, sound velocity in the tissue, and sound absorption coefficient all increase, and these changes are consistent with Breast cancer has a strong positive correlation. [0003] Ultrasound tomography (Computed Tomography, CT) is a non-destructive testing method, which uses ultrasonic data detected from outside the tissue to quantitatively measure the propagation speed, absorption coefficient, attenuation coefficient and other parameters of ultrasonic waves in different tissues, and Using the above parameters...

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Problems solved by technology

[0005] The object of the present invention is to propose an ultrasonic tomography system and method based on a linear array, which not only overcomes the disadvantages of complex processing of the circular array, large data processing volume, and high complexity of system control, but also effectively reduces the manufacturing and processing costs and facilitates Promotion of Ultrasonic CT Breast Cancer Screening System in Clinical Application

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