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Optoacoustic and ultrasonic bimodal endoscope imaging system and imaging method

An imaging system and dual-mode technology, applied in optics, telescopes, optical components, etc., can solve the problems of inability to realize forward-facing A-type endoscopic imaging, and achieve improved dynamic focus detection capabilities, small processing size, and large bandwidth Effect

Active Publication Date: 2014-08-13
JIANGXI SCI & TECH NORMAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Its sensors adopt a circular array pattern, and the receiving direction (that is, the normal direction of the sensor) matches the circular light spot to realize fan-shaped circumferential scanning imaging in the lateral mode, and can achieve lateral inner wall in a single shot. The advantages of two-dimensional circumferential imaging, but its obvious disadvantage is that a large area of ​​the forward area (that is, the tangential direction of the sensor) is an imaging blind area, which is only suitable for lateral fan-shaped endoscopic imaging of tubular objects to be measured, and cannot be realized in depth. Forward-facing A-mode endoscopic imaging

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Embodiment Construction

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

[0031] like figure 1 As shown, a photoacoustic ultrasound dual-mode endoscopic imaging system includes an excitation and sensing unit A and a control and processing unit B; the excitation and sensing unit A is connected to the control and processing unit B;

[0032] The excitation and sensing unit A includes an endoscopic lens 1 and a cable 2; the endoscopic lens 1 is arranged at one end of the cable 2; the other end of the cable 2 is connected to the control and processing unit B;

[0033] The control and processing unit B includes a light source 3, a control and processor 4, an interface module 5, a pulse voltage generator 6, a display screen 7, a crystal oscillator circuit 8 and a power supply circuit 9; , the interface module 5, the pulse voltage generator 6, and the display screen 7 are electrically connected, and are used to provide control signa...

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Abstract

The invention discloses an optoacoustic and ultrasonic bimodal endoscope imaging system. The optoacoustic and ultrasonic bimodal endoscope imaging system is composed of an endoscope lens, a light source, a controlling and processing device, an impulse voltage generator, an interface module, a cable, a display screen, a crystal oscillator circuit and a power circuit. The optoacoustic and ultrasonic bimodal endoscope imaging system can achieve endoscopic type optoacoustic and ultrasonic bimodal imaging. According to the optoacoustic and ultrasonic bimodal endoscope imaging system, a high density CMUT ring array manufactured by using surface micro fabrication technology is used, an excitation unit and a sensing unit are designed into coaxial and homocentric integrative microstructure, and integration, microminiaturization and practical performance of optoacoustic and ultrasonic excitation and sensing are achieved. The optoacoustic and ultrasonic bimodal endoscope imaging system can be widely used in fields of medical endoscopic diagnosis, jewelry identification, industrial inspection and flaw detection and the like.

Description

technical field [0001] The invention relates to an endoscopic imaging system, in particular to a photoacoustic ultrasonic dual-mode endoscopic imaging system; it belongs to the endoscopic imaging technology and is applicable to the fields of biomedical diagnosis, treasure jewelry identification, industrial and commercial inspection and flaw detection, etc. . Background technique [0002] Endoscopy technology is an image method for observing the internal structure and function information of objects through light, sound and electricity. For example: optical endoscope can directly reflect the optical scattering or reflection information of the absorber, but due to the attenuation of light by the medium, its penetration depth is only on the order of a shallow millimeter; ultrasonic endoscope reflects the acoustic impedance of the absorber Differential information has a penetration depth of centimeters, but its imaging contrast is relatively low. [0003] With the advancement ...

Claims

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Application Information

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IPC IPC(8): A61B1/00A61B8/12G01N21/84G01N21/87G01N21/88G02B23/26
Inventor 曾吕明刘国栋
Owner JIANGXI SCI & TECH NORMAL UNIV
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