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Proceedings Paper

Ultrasonic attenuation of biomaterials for compensation in photoacoustic imaging
Author(s): Johannes Bauer-Marschallinger; Thomas Berer; Heinz Roitner; Hubert Grün; Bernhard Reitinger; Peter Burgholzer
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Paper Abstract

Ultrasonic attenuation in biomaterials limits the quality and resolution of ultrasonic imaging. This work presents a simple and reliable method to investigate acoustic attenuation of biological tissue samples and liquids in order to improve reconstruction algorithms for photoacoustic imaging. For this purpose broadband high-frequency single transmission measurements were performed. The spectra of the acquired signals were compared to reference measurements in distilled water. Unfocused broadband piezoelectric transducers were used as ultrasound source and detector. Moreover, laser generated ultrasound, which provides more intensity and signals with higher bandwidth, was used to measure acoustic attenuation. Only few studies concerned with attenuation of fat tissue performed broadband high frequency measurements and to our knowledge none of those used the simple and reliable single transmission approach with unfocused ultrasound. Our results for acoustic attenuation in olive oil show good agreement with literature. Many studies indicate linear frequency increase of attenuation of fat tissue. However, we observed significant non-linear frequency behaviour of porcine subcutaneous fat tissue at room temperature with a power-law exponent of around 1.45.

Paper Details

Date Published: 22 February 2011
PDF: 9 pages
Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 789931 (22 February 2011); doi: 10.1117/12.874663
Show Author Affiliations
Johannes Bauer-Marschallinger, Christian Doppler Lab. of Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)
Thomas Berer, Christian Doppler Lab. of Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)
Heinz Roitner, Christian Doppler Lab. of Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)
Hubert Grün, RECENDT GmbH (Austria)
Bernhard Reitinger, Christian Doppler Lab. of Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)
Peter Burgholzer, Christian Doppler Lab. of Photoacoustic Imaging and Laser Ultrasonics (Austria)
RECENDT GmbH (Austria)


Published in SPIE Proceedings Vol. 7899:
Photons Plus Ultrasound: Imaging and Sensing 2011
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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