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Photoacoustic effect simulation method based on sound wave superposition

A technology of photoacoustic effect and simulation method, applied in the direction of design optimization/simulation, application, special data processing application, etc., can solve problems such as long operation time and complex calculation, and achieve the effect of reducing running time

Active Publication Date: 2021-03-26
SHANGHAI TECH UNIV
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the calculation of the numerical method for solving the photoacoustic equation in the photoacoustic simulation software is relatively complicated and the operation time is long

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  • Photoacoustic effect simulation method based on sound wave superposition
  • Photoacoustic effect simulation method based on sound wave superposition
  • Photoacoustic effect simulation method based on sound wave superposition

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0037] The invention provides a photoacoustic effect simulation and simulation method based on sound wave superposition, comprising the following steps:

[0038] Step 1. Divide the initial pressure distribution grid provided by the photoacoustic simulation software into n×m pixel points, and there are J ultrasonic probes in different positions;

[0039] Step 2, set j=1;

[0040] Step 3. Set p=1;

[0041] Step 4. By setting th...

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Abstract

The invention discloses a photoacoustic effect simulation method based on sound wave superposition. According to the method, an initial pressure distribution grid is divided into a plurality of pixelpoints, photoacoustic signals independently generated by each pixel point are calculated respectively, and then the overall photoacoustic signals are calculated according to the wave superposition principle. According to the method provided by the invention, a complex photoacoustic equation is converted into simple cyclic superposition operation, so that the running time is greatly shortened. In most cases, the running time of the method provided by the invention is far shorter than the calculation time of k-Wave.

Description

technical field [0001] The invention relates to a photoacoustic effect simulation and simulation method, belonging to the technical field of photoacoustic effect, photoacoustic forward model and simulation model development. Background technique [0002] The photoacoustic effect refers to the physical phenomenon that an object generates an acoustic signal under the excitation of a laser. Based on the photoacoustic effect, photoacoustic imaging technology has received extensive attention in recent years and has achieved rapid development. At present, photoacoustic imaging technology has achieved certain success in small animal imaging, blood oxygen saturation quantification, and diagnosis of benign and malignant tumors. [0003] The development of photoacoustic imaging has benefited from the development and maturity of photoacoustic simulation software to a certain extent. Among them, k-Wave is a relatively mature photoacoustic simulation software, which is widely used in v...

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Application Information

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IPC IPC(8): G06F30/20G06F17/15A61B5/00
CPCG06F30/20G06F17/15A61B5/0095G06F2101/08G06F2101/10
Inventor 高飞张佳冬高峰
Owner SHANGHAI TECH UNIV
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