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

Janaka C. Ranasinghesagara, Roger J. Zemp
2010 Journal of Biomedical Optics  
While photoacoustic imaging is capable of producing highresolution 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
more » ... ssue optical properties were known. One method to estimate tissue optical properties is a technique known as oblique incidence diffuse reflectance ͑OIR͒. 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.
doi:10.1117/1.3470336 pmid:20799818 fatcat:vjsoxhkr55dehb24k3rchhx76m