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Photoacoustic/ultrasonic imaging device and method based on spiral rapid large-range scanning

A large-scale scanning and ultrasonic imaging technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problem of resolution reduction, achieve a wide range, high integration, improve imaging quality and resolution Effect

Active Publication Date: 2021-06-25
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the system can achieve fast imaging, the ultrasonic transducer of the system is a flat-field ultrasonic transducer, so the imaging resolution of the system is completely determined by the size of the spot. Or when the tissue is imaged deeply, it will cause the resolution of the system to drop

Method used

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  • Photoacoustic/ultrasonic imaging device and method based on spiral rapid large-range scanning
  • Photoacoustic/ultrasonic imaging device and method based on spiral rapid large-range scanning

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Embodiment

[0043] Such as Figure 1-Figure 5 As shown, the present embodiment is a photoacoustic / ultrasonic imaging device based on spiral fast and large-scale scanning, including a computer 1, a pulse control circuit 2, a pulse laser 3, a fiber coupler 5, a single-mode fiber 6, and a mechanical scanning component 7, amplification circuit 10, data acquisition circuit 11 and motor control circuit 12; Described computer 1 communicates with pulse control circuit 2, motor control circuit 12, pulse control circuit 2 sends pulse signal control pulse laser 3 to produce pulse laser beam 4, Coupled into the single-mode optical fiber 6 through the fiber coupler 5, the other end of the single-mode optical fiber 6 is connected to the mechanical scanning component 7, and the focused beam 8 focused by the mechanical scanning component 7 is irradiated on the surface of the tested sample 9, and the photoacoustic sound generated After the signal is amplified by the amplifier circuit 10, it is collected b...

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Abstract

The invention discloses an opto-acoustic / ultrasonic imaging device and method based on spiral rapid large-range scanning. The device comprises a computer, a pulse control circuit, a pulse laser, an optical fiber coupler, a single-mode optical fiber, a mechanical scanning assembly, an amplifying circuit, a data acquisition circuit and a motor control circuit, wherein the computer communicates with the pulse control circuit and the motor control circuit, the pulse control circuit sends out a pulse signal to control the laser to generate pulse laser, the pulse laser is coupled into the single-mode optical fiber through the optical fiber coupler, and the other end of the single-mode optical fiber is connected to the mechanical scanning assembly; the focused light focused by the mechanical scanning assembly is irradiated to a surface of a detected sample, and a generated photoacoustic signal is amplified by an amplifier and then is collected by a data acquisition circuit; The photoacoustic / ultrasonic integrated imaging probe can be driven to scan a sample in a spiral mode, large-range scanning can be achieved, and meanwhile high detection sensitivity is achieved.

Description

technical field [0001] The invention belongs to the technical field of photoacoustic microscopic imaging, and in particular relates to a photoacoustic / ultrasonic imaging device and method based on spiral fast and large-scale scanning. Background technique [0002] At present, the main scanning methods of photoacoustic imaging are: linear scanning method based on linear motor, linear scanning method based on stepping motor, linear scanning method based on ultrasonic motor, linear scanning method based on voice coil motor, fast scanning based on galvanometer Method, scanning method based on micro-electromechanical system (MEMS mirror). [0003] Based on the linear scanning method of linear motors, stepping motors, and ultrasonic motors, since these motors need to go through the cycle process of acceleration, deceleration, stationary to reverse acceleration, deceleration, and stationary when driving the sliding table to do repeated motions, so Its scanning speed cannot be kept...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17G01N21/01
CPCG01N21/1702G01N21/01G01N2021/0112
Inventor 杨思华潘树程中文
Owner SOUTH CHINA NORMAL UNIVERSITY
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