Measurement of Grüneisen parameter of tissue by photoacoustic spectrometry

Da-Kang Yao; Lihong V. Wang

doi:10.1117/12.2004117

4 March 2013 Measurement of Grüneisen parameter of tissue by photoacoustic spectrometry

Da-Kang Yao, Lihong V. Wang

Proceedings Volume 8581, Photons Plus Ultrasound: Imaging and Sensing 2013; 858138 (2013) https://doi.org/10.1117/12.2004117
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

The Grüneisen parameter of tissue is a constitutive parameter in photoacoustic tomography. Here, we applied photoacoustic spectrometry (PAS) to directly measure the Grüneisen parameter. In our PAS system, laser pulses at wavelengths between 460 and 1600 nm were delivered to tissue samples, and photoacoustic signals were detected by a 20 MHz flat water-immersion ultrasonic transducer. By fitting photoacoustic spectra to light absorption spectra, we found that the Grüneisen parameter was 0.73 for porcine subcutaneous fat tissue, and 0.15 for oxygenated bovine red blood cells at room temperature (24°C).

Citation Download Citation

Da-Kang Yao and Lihong V. Wang "Measurement of Grüneisen parameter of tissue by photoacoustic spectrometry", Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 858138 (4 March 2013); https://doi.org/10.1117/12.2004117

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