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Phased array ultrasonic focusing system for acoustic and resistivity imaging

A technology of ultrasonic focusing and phased array, which is applied in ultrasonic/sonic/infrasonic diagnosis, application, sound wave diagnosis, etc., to achieve the effects of small size, flexible emission waveform, and wide emission bandwidth

Inactive Publication Date: 2017-10-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Synthetic aperture focusing technology uses a single probe to move the transmitting / receiving synthetic array probe, and has the advantages of high resolution and good signal-to-noise ratio in the imaging system. However, because the focusing is achieved through signal synthesis, the physical exact focusing point, which puts high demands on the signal processing technology

Method used

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  • Phased array ultrasonic focusing system for acoustic and resistivity imaging
  • Phased array ultrasonic focusing system for acoustic and resistivity imaging
  • Phased array ultrasonic focusing system for acoustic and resistivity imaging

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Embodiment Construction

[0036] The phased array ultrasonic focusing system applied to acoustoelectric imaging technology of the present invention will be described below in conjunction with the accompanying drawings and embodiments. It is intended to be described as an embodiment of the present invention, and it is not the only form that can be manufactured or utilized. For other possible Embodiments that achieve the same function should also be included in the scope of the present invention.

[0037] The phased array ultrasonic focusing system applied to the acoustoelectric imaging technology of the present invention is an invention based on the basic theory of acoustoelectricity. According to the principle of acoustoelectric effect, the focused ultrasonic wave will disturb the conductivity of the focused domain, and satisfy the

[0038] δσ=k·P·σ

[0039] Among them, δσ is the change in conductivity caused by the action of focused ultrasonic waves, σ is the initial conductivity distribution of the ...

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Abstract

The invention relates to a phased array ultrasonic focusing system for acoustic and resistivity imaging. The phased array ultrasonic focusing system comprises an upper computer, a transmitting module, a receiving module and a digital control and data processing module, delay time and pulse width of array elements of a phased-array transducer are calculated through a PC terminal by the upper computer according to position and depth of focus points, the delay time and the pulse width are transmitted to FPGA (field programmable gate array), transceiving control and emission focusing, deflection and dynamic scanning of a multi-channel phased array probe are achieved by the aid of programming of the FPGA, and delay information and pulse width information of the energy converter are transmitted to a beam former in real time.

Description

technical field [0001] The invention belongs to the technical field of acoustoelectric imaging, and relates to a phased array ultrasonic focusing system applicable to the acoustoelectric imaging technology. Background technique [0002] Different tissues (organs) of the human body have different electrical characteristics, and the electrical impedance characteristic is the inherent electrical characteristic of the organism, which contains rich physiological activities and pathological information. And the functional lesion of the biological tissue is earlier than the structural lesion, but the functional recovery lags behind the structural recovery. Through certain technical means to reconstruct the electrical characteristics of biological tissues or media distribution images, functional imaging technology has important guiding significance for the diagnosis of diseases and the evaluation of human health status in clinical practice. [0003] Electrical Impedance Tomography ...

Claims

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Application Information

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IPC IPC(8): A61B8/00A61B5/053
Inventor 许燕斌朱凯董峰
Owner TIANJIN UNIV
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