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Opto-acoustic/ultrasonic bimodal high-frequency probe based on ellipsoidal curvature

An ellipsoidal, dual-mode technology, applied in ultrasonic/acoustic/infrasonic diagnostics, acoustic diagnostics, infrasonic diagnostics, etc., can solve the problems of array sensor design and manufacturing process and processing difficulty, inability to apply endoscopic imaging system, bulky, etc. problem, to achieve remarkable design effect, simple production method, and solve the effect of insufficient depth of field

Active Publication Date: 2021-06-08
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

However, the design, manufacture and processing of this type of array sensor are difficult, costly, complex in algorithm, and bulky, so they cannot be used in endoscopic imaging systems

Method used

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  • Opto-acoustic/ultrasonic bimodal high-frequency probe based on ellipsoidal curvature
  • Opto-acoustic/ultrasonic bimodal high-frequency probe based on ellipsoidal curvature

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0033] Such as figure 1 , figure 2As shown, the photoacoustic / ultrasonic dual-mode high-frequency probe (hereinafter briefly referred to as the high-frequency probe U) based on the curvature of the ellipsoid in this embodiment includes: a probe shell 30, an ellipsoidal backing layer 10, a high-frequency piezoelectric element 20 and Signal transmission line 40; the side wa...

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Abstract

The invention discloses an opto-acoustic / ultrasonic bimodal high-frequency probe based on ellipsoidal curvature, which comprises a probe shell, an ellipsoidal backing layer, a high-frequency piezoelectric element and a signal transmission line, a hole is dug in the middle of the side wall of the probe shell and is provided with the signal transmission line, the ellipsoidal backing layer is coaxially fixed on an incident light channel of the probe shell, a cylindrical structure is arranged in the middle of the ellipsoidal backing layer, the high-frequency piezoelectric element is pressed at the lower end of the ellipsoidal backing layer to form an ellipsoidal concave surface for expanding the depth of field, the middle part of the high-frequency piezoelectric element is provided with a middle digging hole matched with the cylindrical structure, and the shape of the ellipsoidal concave surface is matched with that of the ellipsoidal backing layer. The defect that the depth of field of an existing high-frequency probe is insufficient is overcome, the transverse resolution ratio and the axial resolution ratio of photoacoustic / ultrasonic imaging can be improved through the high-frequency piezoelectric element, and signals from deeper tissue can be received under the condition that the focus position does not need to be moved.

Description

technical field [0001] The invention relates to the field of photoacoustic technology, in particular to a photoacoustic / ultrasonic dual-mode high-frequency probe based on the curvature of an ellipsoid. Background technique [0002] Photoacoustic imaging is a non-destructive biomedical imaging technology that has developed rapidly in recent years. Based on the photoacoustic effect, it uses a short pulse light source as an excitation source to irradiate biological tissue, and the biological tissue absorbs the light energy. Due to the rapid thermal expansion, a photoinduced ultrasonic signal is generated. After the ultrasonic signal carrying the optical absorption information of the tissue is received, the imaging algorithm is used to invert the Visualization of the absorption structure of biological tissue. Photoacoustic imaging combines the advantages of optical imaging and ultrasound imaging, and has become a key imaging technology between optical imaging and ultrasound ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B8/00
CPCA61B5/0095A61B5/0035A61B8/4444A61B8/5261
Inventor 杨思华张道程程中文王志阳张吴昱
Owner SOUTH CHINA NORMAL UNIVERSITY
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