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Laser focused ultrasound excitation magnetic acoustoelectric imaging method and device

A focused ultrasound and electro-imaging technology, applied in ultrasound/sonic/infrasonic image/data processing, ultrasonic/sonic/infrasonic diagnosis, ultrasonic/sonic/infrasonic Permian technology, etc., can solve electromagnetic interference, detect signal sensitivity, etc. Low, low resolution, etc.

Active Publication Date: 2017-12-22
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of low resolution, low detection signal sensitivity and electromagnetic interference in the existing magnetoacoustic electrical imaging method, and propose a magnetoacoustic electrical imaging method and device for laser focused ultrasonic excitation

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  • Laser focused ultrasound excitation magnetic acoustoelectric imaging method and device
  • Laser focused ultrasound excitation magnetic acoustoelectric imaging method and device
  • Laser focused ultrasound excitation magnetic acoustoelectric imaging method and device

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0040] Such as figure 1 As shown, the magnetoacousto-electric imaging method of the present invention with laser focused ultrasound excitation is as follows:

[0041] First, the laser beam emitted from the pulsed laser excitation source A01 is expanded by the laser beam expansion system A04, and irradiates the laser focused ultrasound core device A05 to generate focused ultrasound. The static magnetic field generated by the focused ultrasound and the magnet A11 acts on the target imaging body A12, and a local electric field source is generated in the target imaging body A12. The detection electrode A13 or the detection coil A07 is used to receive the electric signal of the local electric field source, and the received electric signal is weak. After being processed by the electromagnetic signal detection module A06, it enters the electrical parameter reconstruct...

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Abstract

The invention relates to a laser focused ultrasound excitation magnetic acoustoelectric imaging method and device. A laser beam subjected to beam expanding irradiates a carbon nanotube photoacoustic enhancement medium; focused ultrasound is generated; the focused ultrasound and a static magnetic field mutually act in a bioimaging body to generate a local electric field source; and a receiving coil or an electrode detection signal is used for rebuilding a biological tissue conductivity image. The laser focused ultrasound excitation magnetic acoustoelectric imaging device comprises a laser focused ultrasound excitation module, a coupling module, a detection and rebuilding module and a control and synchronization module, wherein the laser focused ultrasound excitation module generates controllable focused ultrasound with high pulse, high frequency and small focal spot; and the coupling module realizes the multi-physics coupling of the focused ultrasound, a target imaging body and electromagnetic excitation. The detection and rebuilding module realizes the detection on weak electric signals and the rebuilding on the target imaging body; and the control and synchronization module realizes the control and synchronization of the whole device.

Description

Technical field [0001] The invention relates to a magnetoacoustoelectric imaging method and device, in particular to a magnetoacoustoelectric imaging method and device excited by laser focused ultrasound. Background technique [0002] Electrical impedance imaging is a new generation of medical imaging technology following morphological and structural imaging. It is of great value for life science research and early diagnosis of diseases. When biological tissues have early lesions and have not undergone changes in morphological structure, the biological tissues The amount of charge and the spatial distribution of charges of various chemical substances will first change, which is macroscopically manifested as changes in the electrical properties (electrical impedance, conductivity, and dielectric constant) of the biological tissues of the lesion. Therefore, the electrical properties of the tissue can be imaged. To achieve the purpose of early diagnosis and early treatment of diseas...

Claims

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Application Information

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IPC IPC(8): A61B5/05A61B5/053A61B5/00A61B8/08
CPCA61B5/0035A61B5/0059A61B5/0093A61B5/05A61B5/0536A61B5/7225A61B8/0833A61B8/5261A61B2560/06
Inventor 夏慧刘国强夏正武李艳红李士强李晓南
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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