Research on photoacoustic effect of picosecond laser pulse with tissue based on finite element method

Jiahao Zeng; Rui Wang; Ao Teng; Xianlin Song

doi:10.1117/12.2601380

16 July 2021 Research on photoacoustic effect of picosecond laser pulse with tissue based on finite element method

Jiahao Zeng, Rui Wang, Ao Teng, Xianlin Song

Proceedings Volume 11844, Photonics for Quantum 2021; 1184416 (2021) https://doi.org/10.1117/12.2601380
Event: Photonics for Quantum, 2021, Online Only

Conference Poster

Abstract

Photoacoustic imaging technology is an emerging functional imaging method in the field of biomedical applications. It combines the light absorption characteristics of tissues with the advantages of ultrasonic detection, and has the advantages of strong contrast, high sensitivity, and deep imaging depth. Therefore, this article uses the finite element software COMSOL Multiphysics to study the relationship between ultrashort laser pulses and the generated photoacoustic signals. In COMSOL, a laser with a pulse width of 5 ps is used as the excitation light source. Use mathematics module, heat transmission module, etc. to simulate the process of photothermal conversion-thermal expansion-generation of ultrasound in the photoacoustic imaging of the tissue-absorber system. In this way, the photoacoustic signal and its image are obtained. This study provides a theoretical basis for the application of picosecond laser pulses in photoacoustic imaging.

Citation Download Citation

Jiahao Zeng, Rui Wang, Ao Teng, and Xianlin Song "Research on photoacoustic effect of picosecond laser pulse with tissue based on finite element method", Proc. SPIE 11844, Photonics for Quantum 2021, 1184416 (16 July 2021); https://doi.org/10.1117/12.2601380

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available