Unlock instant, AI-driven research and patent intelligence for your innovation.

Initial sound pressure distribution image acquisition method and system capable of solving acoustic scattering problem

An image acquisition and acoustic scattering technology, which is applied in the field of medical imaging, can solve problems such as speckle noise, image contrast reduction, position offset, etc., and achieve the effect of improving focusing effect, improving imaging quality, and eliminating artifacts

Inactive Publication Date: 2018-09-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, most biological tissues have acoustic scattering characteristics. In the acoustic scattering environment, the reconstructed photoacoustic image will have problems such as distortion, distortion, speckle noise, position shift and image contrast reduction.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Initial sound pressure distribution image acquisition method and system capable of solving acoustic scattering problem
  • Initial sound pressure distribution image acquisition method and system capable of solving acoustic scattering problem
  • Initial sound pressure distribution image acquisition method and system capable of solving acoustic scattering problem

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The purpose of the present invention is to provide a method and system for acquiring an initial sound pressure distribution image that solves the problem of sound scattering, eliminates artifacts generated by scattered sound waves, effectively improves the focusing effect of the image, and improves the imaging quality.

[0041] In order to make the above objects, features and advantages of the present invention more clearly unde...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an initial sound pressure distribution image acquisition method and system capable of solving an acoustic scattering problem. The image acquisition method comprises the steps that photoacoustic signals of a biological tissue are obtained; the time reversal of the photoacoustic signals is carried out, and a time reversal sound field is obtained; an initial sound field on thetissue surface is reconstructed according to the time reversal sound field; and according to the initial sound field, the initial sound pressure distribution image of the biological tissue is obtained. According to the initial sound pressure distribution image acquisition method or system, according to the time reversal invariance of the propagation of the photoacoustic signals in tissues, the scattered ultrasonic waves can be accurately collected to the location of a sound source by using a time inversion principle, and then the initial sound pressure distribution image on the cross sectionof the biological cavity can be obtained.

Description

technical field [0001] The invention relates to the field of medical imaging, in particular to a method and system for acquiring an initial sound pressure distribution image for solving the problem of sound scattering. Background technique [0002] Biophotoacoustic endoscopic imaging is a functional endoscopic imaging technology based on the photoacoustic effect of biological tissue. The tissue absorbs the laser energy to generate thermoelastic expansion, and then generates ultrasonic waves (ie, photoacoustic signals) and propagates to the surface of the tissue. The ultrasonic detector detects the photoacoustic signals and sends them to the computer to reconstruct the initial sound pressure on the cavity cross-section. Distribution map or optical characteristic parameter distribution map. [0003] Considering the complexity of biological tissues, most of the current research on biophotoacoustic endoscopic image reconstruction assumes that photoacoustic signals do not scatte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00
CPCA61B5/0095A61B5/7203
Inventor 孙正贾艺璇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)