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Journal of Biomedical Optics • Open Access

Combined photoacoustic and oblique-incidence diffuse reflectance system for quantitative photoacoustic imaging in turbid media

Paper Abstract

While photoacoustic imaging is capable of producing high-resolution biomedical images with optical absorption contrast, optical property quantification has thus far remained challenging. One reason for this is that laser-induced photoacoustic signal amplitudes are proportional to not only the local optical absorption coefficient, but also the local laser fluence in the tissue. Unfortunately, local laser fluence is often unknown, but could possibly be estimated if local bulk tissue optical properties were known. One method to estimate tissue optical properties is a technique known as oblique incidence diffuse reflectance (OIR). We report on an integrated OIR and photoacoustic imaging system and demonstrate, using phantom experiments, improved ability to quantitatively estimate optical properties of a turbid medium.

Paper Details

Date Published: 1 July 2010
PDF: 5 pages
J. Biomed. Opt. 15(4) 046016 doi: 10.1117/1.3470336
Published in: Journal of Biomedical Optics Volume 15, Issue 4
Show Author Affiliations
Janaka C. Ranasinghesagara, Univ. of Alberta (Canada)
Roger J. Zemp, Univ. of Alberta (Canada)

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