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Magneto-acoustic-electric imaging system and imaging method

An imaging method and electro-imaging technology, applied in the directions of acoustic wave diagnosis, infrasound wave diagnosis, ultrasonic/sonic wave/infrasonic wave diagnosis, etc., can solve the problems of stay theory research and in vitro experimental system research stage, etc.

Active Publication Date: 2013-01-30
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The above imaging methods have potential advantages in improving sensitivity and spatial resolution, but they are still in the stage of theoretical research and in vitro experimental systems.

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 As shown, the magnetoacoustic electric imaging system of the present invention mainly includes an ultrasonic driving excitation source 10, an ultrasonic probe array 20, a coupling agent 30, a magnet system 40, an electrode pair or a coil 50, a signal detection processing system 60, an image reconstruction system 70, and a control system 80. Also included are organisms 90 .

[0032] The ultrasonic driving excitation source 10 is connected to the ultrasonic probe array 20, the control system 80 is connected to the ultrasonic probe array 20, the electrode pair or coil 50, the signal detection processing system 60, and the image reconstruction system 70 are connected in sequence. The magnet system 40 can be implemented with permanent magnets, electromagnets or superconducting magnets.

[0033] The magneto-acoustic-electri...

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Abstract

The invention provides a magneto-acoustic-electric imaging system, mainly comprising an ultrasonic driving excitation source, an ultrasonic probe array, a control system, a magnet system, an electrode pair or a coil, and a signal detection processing system. The ultrasonic probe array is controlled to be at two modes of transmitting or measuring by the control system. An imaging method of the magneto-acoustic-electric imaging system is characterized by adopting acoustic radiation force to generate a focusing region inside a biological tissue and adopting an ultrasonic echo technology to measure the position of the focusing region and a mass point vibration speed. The area of the focusing region is small so that an inner static magnetic field in the focusing region, the mass point vibration speed and a current density of an assumption process are approximate to an average value, so that a linear relation between measured voltage and the current density of the assumption process is established.

Description

technical field [0001] The invention relates to a medical imaging method and device, in particular to a magneto-acoustic-electric imaging method and device. Background technique [0002] The sensitivity and spatial resolution of traditional electrical impedance imaging are not high. In order to solve this problem, various new imaging methods have been proposed. Magnetoacoustoelectric imaging is a new medical imaging method with good application prospects. The imaging principle is to inject a beam of ultrasonic waves into the imaging body, and the local ions in the imaging body vibrate with the propagation of the ultrasonic waves. The vibrating ions are subjected to the Lorentz force under the action of the static magnetic field, causing charge separation, and then forming The local electric field is used to reconstruct the electrical impedance image by detecting electrical signals through the receiving electrode attached to the imaging body or the receiving coil that is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/053A61B8/00G01N27/04
Inventor 刘国强陆敏华夏慧李士强李艳红夏正武王霜黄欣
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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