A method and system for reconstruction of magneto-acoustic-electric imaging images
An image reconstruction and electrical imaging technology, which is applied in the direction of material magnetic variables, material analysis through electromagnetic means, instruments, etc., can solve the problems of irregular shape of the target to be measured, and the inability to reconstruct the image of electrical parameters, etc., to achieve the effect of eliminating the effect of angle
Active Publication Date: 2022-05-24
SHENZHEN UNIV
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[0005] The purpose of the present invention is to provide a magnetoacoustic electric imaging image reconstruction method and system to solve the problem that the existing magnetoacoustic electric imaging method cannot reconstruct the electrical parameter image for the object to be measured with irregular shape
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[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0056] The purpose of the present invention is to provide a method and system for reconstructing a magneto-acoustic-electric imaging image, which can superimpose the magneto-acoustic-electric signals at each angle, reflect the actual conductivity difference, and eliminate the angle influence between the direction of the sound beam and the interface. , for the object to be measured with irregular shape, the magneto-acoustic-electric ima...
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The invention relates to a magnetoacoustic electric imaging image reconstruction method and system. The reconstruction method includes: taking the step threshold as the moving distance, moving the ultrasonic transducer along the electrode connection line of the target to be measured, performing a linear scan from the starting position until it moves to the end position, and collecting the first magnetoacoustic electric current of each frame. Signal; take the rotation angle as the movement angle, and the target to be measured as the rotation center, move the ultrasonic transducer and the electrode in a circle, perform a linear scan until the 360-degree circular motion is completed, and collect the first magneto-acoustic-electric image of each frame; according to the first The magnetoacoustoelectric signal is preprocessed; image superimposition is performed on the first magnetoacoustoelectric image, the magnetoacoustoelectric imaging image is reconstructed, and the superimposed magnetoacoustoelectric imaging image is determined. The reconstruction method and system provided by the present invention can superimpose the magneto-acoustic-electric signals at each angle, reflect the actual conductivity difference, and eliminate the influence of the angle of the sound beam direction and the interface.
Description
technical field [0001] The invention relates to the field of electrical impedance imaging, in particular to a method and system for reconstructing a magneto-acoustic-electric imaging image. Background technique [0002] Magneto-acoustic-electric imaging is a multi-physical field coupling imaging method, involving electromagnetism and ultrasound. The conductivity information of the object to be measured is used as the imaging target. The imaging method has the high contrast of electrical impedance imaging and the high resolution of ultrasonic imaging. It is a medical imaging method with great application potential. [0003] Imaging principle: A beam of ultrasonic signal is used to excite the target to be measured under the static magnetic field, the ions in the target to be measured are excited by the ultrasonic signal to vibrate, and the moving ions generate Lorentz force under the action of the static magnetic field, positive and negative ions. The direction of the Lorentz...
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IPC IPC(8): G01N27/72G01N27/04
CPCG01N27/725G01N27/04
Inventor 陈昕曾鑫孙通郝鹏慧闫杰杰
Owner SHENZHEN UNIV