id: 06100165
dt: j
an: 06100165
au: Tarvainen, T.; Cox, B.T.; Kaipio, J.P.; Arridge, S.R.
ti: Reconstructing absorption and scattering distributions in quantitative
    photoacoustic tomography.
so: Inverse Probl. 28, No. 8, Article ID 084009, 17 p. (2012).
py: 2012
pu: IOP Publishing Ltd., Bristol
la: EN
cc: 
ut: 
ci: 
li: doi:10.1088/0266-5611/28/8/084009
ab: Summary: Quantitative photoacoustic tomography is a novel hybrid imaging
    technique aiming at estimating optical parameters inside tissues. The
    method combines (functional) optical information and accurate
    anatomical information obtained using ultrasound techniques. The
    optical inverse problem of quantitative photoacoustic tomography is to
    estimate the optical parameters within tissues when the absorbed
    optical energy density is given. We consider reconstruction of
    absorption and scattering distributions in quantitative photoacoustic
    tomography. The radiative transport equation and diffusion
    approximation are used as light transport models and solutions in
    different size domains are investigated. The simulations show that
    scaling of the data, for example by using logarithmic data, can be
    expected to significantly improve the convergence of the minimization
    algorithm. Furthermore, both the radiative transport equation and
    diffusion approximation can give good estimates for absorption.
    However, depending on the optical properties and the size of the
    domain, the diffusion approximation may not produce as good estimates
    for scattering as the radiative transport equation.
rv: