Magnetosonic electric imaging method and device adopting electromagnetic focusing ultrasonic excitation

Abstract

The invention provides a magnetosonic electric imaging method and a magnetosonic electric imaging device adopting electromagnetic focusing ultrasonic excitation. According to the method and the device, an electromagnetic excitation source transmits an excitation signal through an electrode, the excitation signal acts to an ultrasonic enhanced medium, then focused ultrasound is generated on the ultrasonic enhanced medium, the focused ultrasound acts to a target imaging body, under the effect of an externally applied static magnetic field, separation of positive and negative charges is generatedin an action area of the target imaging body, and a local electric field source is formed in the target imaging body. After a detection coil or a detection electrode receives an electric signal, an electric parameter image of the target imaging body is reestablished by adopting a reconstruction algorithm. In the magnetosonic electric imaging device provided by the invention, an electromagnetic focusing ultrasonic excitation module is connected with a coupling module through coupling liquid, the coupling module is positioned in a water tank, the coupling module is connected with a detection and reconstruction module through the detection coil or the detection electrode, and a control and synchronization module is connected with the electromagnetic focusing ultrasonic excitation module andthe detection and reconstruction module.

Description

technical field [0001] The invention relates to a magnetoacoustic electric imaging method and device, in particular to a magnetoacoustic electric imaging method and device excited by electromagnetic focused ultrasound. Background technique [0002] Electrical impedance imaging using tissue electrical properties has the technical advantages of non-destructive and functional imaging. It is a new generation of medical imaging methods after morphological and structural imaging. It is of great value for life science research and early diagnosis of diseases. Research and clinical provide a new kind of diagnostic information. On the one hand, when the biological tissue has early lesions and has not yet changed its morphological structure, the charge amount and spatial distribution of various chemical substances in the biological tissue will first change, which is manifested macroscopically as the electrical charge of the biological tissue at the lesion. The characteristics (electr...

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On the basis of methodological research, the current main research focuses on how to meet the clinical needs of l...

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