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Acoustic focusing endoscopic photoacoustic/ultrasonic probe and scanning imaging method

An ultrasonic probe and acoustic focusing technology, applied in the direction of endoscope, ultrasonic/sonic/infrasonic diagnostic equipment structure, ultrasonic/sonic/infrasonic diagnosis, etc., can solve the problem of reduced lateral resolution and achieve high sensitivity and sound field Uniform, increase the effect of imaging depth of field

Active Publication Date: 2019-09-20
CENT SOUTH UNIV
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  • Application Information

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Problems solved by technology

[0003] However, the existing acoustic-focused photoacoustic endoscopic imaging technology generally uses a fixed-focus ultrasonic transducer, so it can only focus well near the focal area; when it is far away from the focal area, its lateral resolution will be serious. reduce

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  • Acoustic focusing endoscopic photoacoustic/ultrasonic probe and scanning imaging method
  • Acoustic focusing endoscopic photoacoustic/ultrasonic probe and scanning imaging method

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Embodiment Construction

[0050] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0051] Such as figure 1As shown, the acoustic focusing endoscopic photoacoustic / ultrasound probe includes a catheter and a hand-held housing 17; the catheter includes a transparent hard shell 4, and the transparent hard shell 4 is provided with an ultrasonic transducer, a reflection assembly, an optical assembly and a rotating assembly; The hard shell 4 is fixed on the hand-held shell 17; the ultrasonic transducer is arranged on the top of the transparent hard shell 4, and one end of the optical assembly is placed in the reflective assembly, and the ultrasonic transducer and the r...

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Abstract

The invention belongs to the technical field of photoacoustic endoscopic imaging, and discloses an acoustic focusing endoscopic photoacoustic / ultrasonic probe and a scanning imaging method, wherein the probe comprises a catheter and a hand-held outer shell; the catheter comprises a transparent hard outer shell, and an ultrasonic transducer, a reflecting component, an optical component and a rotating component are arranged in the transparent hard outer shell; the transparent hard outer shell is fixed to the hand-held outer shell; the ultrasonic transducer is arranged at the top of the transparent hard outer shell, one end of the optical component is arranged in the reflecting component, and the ultrasonic transducer is correspondingly arranged with the reflecting component; and the receiving surface of the ultrasonic transducer on the X-Y plane perpendicular to the main axis direction of the catheter is a plane. The detection surface of the ultrasonic transducer on the X-Y plane is changed into a plane, so that the sound field is more uniform, and the original signal strength and the signal-to-noise ratio of front and rear targets in the radial direction are closer; and a corresponding scanning imaging method is adopted to realize the focusing of targets in each position in the radial direction, so that the imaging depth of field is increased.

Description

technical field [0001] The invention relates to the technical field of photoacoustic endoscopic imaging, in particular to an acoustic focusing endoscopic photoacoustic / ultrasonic probe and a scanning imaging method. Background technique [0002] Photoacoustic imaging is a method of using pulsed laser to excite biological tissue, and then detect and image the light absorption distribution in the living body according to the pulsed sound pressure received by the ultrasonic transducer due to the instantaneous thermal expansion caused by the light absorption of biological tissue. A technology that reflects the distribution of light absorption coefficients in living organisms. Acoustic focusing photoacoustic endoscopic imaging uses ultrasound with less tissue scattering to perform endoscopic focusing imaging on biological tissues, which overcomes the problem of being unable to focus and clearly image deep in the tissue due to the strong scattering of light in the tissue in optica...

Claims

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Application Information

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IPC IPC(8): A61B5/00A61B8/12A61B1/00A61B1/07
CPCA61B1/00165A61B1/07A61B5/0033A61B5/0084A61B5/0095A61B8/12A61B8/44A61B8/5261
Inventor 王波庞未然彭宽王聪聪
Owner CENT SOUTH UNIV
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