We modeled three-dimensional light distribution in the radial artery using geometrical parameters of this
blood vessel and optical parameters typical for blood in the near-infrared spectral range. The obtained
light distributions allowed for calculation of optoacoustic signals detected by transducers on the skin
surface. We then compared the calculated signals with optoacoustic signals experimentally measured
from tissue phantoms at different effective attenuation coefficients and obtained good correlation. Our
data suggest that the light distribution and optoacoustic signal modeling can be used in transducer design
and in optoacoustic signal processing for accurate measurement of blood parameters.© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.