Characteristic analysis of photoacoustic signal generated in biological tissue

Shengyou Qian; Da Xing

doi:10.1117/12.462551

12 April 2002 Characteristic analysis of photoacoustic signal generated in biological tissue

Shengyou Qian, Da Xing

Proceedings Volume 4536, International Workshop on Photonics and Imaging in Biology and Medicine; (2002) https://doi.org/10.1117/12.462551
Event: International Workshop on Photonics and Imaging in Biology and Medicine, 2001, Wuhan, China

Abstract

The characteristics of photoacoustic signals generated in real biological tissues are analyzed in time domain and in frequency domain through experiments. It is found that the frequency ranges of photoacoustic signals generated in fresh porcine fat, muscle, liver and kidney are about 5.0 MHz, 1.5 MHz, 2.0 MHz and 2.0 MHz respectively, and their duration is about 1-4 microsecond(s) . A positive peak is very obvious in the photoacoustic waveform of porcine liver, and a negative peak is sharp in the photoacoustic waveform of porcine fat. The main frequencies of photoacoustic signal are relatively stable, which correspond to the properties of biological tissues. The results obtained here are significant for photoacoustic tomography of biological tissue.

Citation Download Citation

Shengyou Qian and Da Xing "Characteristic analysis of photoacoustic signal generated in biological tissue", Proc. SPIE 4536, International Workshop on Photonics and Imaging in Biology and Medicine, (12 April 2002); https://doi.org/10.1117/12.462551

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