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Poster Hall B0 European Conferences on Biomedical Optics (ECBO) > Diffuse Optical Spectroscopy and Imaging > Lunch Break and Poster Session - Monday
12:45-14:15 h | Hall B0 Hall B0, ICM
Subjects: Biophotonics and Medical Engineering
Numerous methods consider the temporal ﬁeld autocorrelation function in order to study the dynamical properties of a medium, e.g. diffuse correlation tomography (DCT) and speckle contrast optical tomography (SCOT). In this paper, we calculate the ﬁeld correlation function in the transport regime as the solution to the correlation transport equation (CTE) introduced in a previous work. We show how perturbation theory can be applied to the CTE in order to calculate the sensitivity kernel relating the variation of the local Brownian motion of particles to the typical data. The Green’s function of the standard radiative transport equation (RTE) can be used to construct the sensitivity kernel in the ﬁrst Born approximation where the correlation time is considered to be the small parameter. We stress that the sensitivity kernel is deﬁned for every point within the scattering medium. The sensitivity kernel is then the Jacobian matrix required in DCT or SCOT in order to perform the image reconstruction. Eventually, we demonstrate how the use of the CTE, instead of the correlation diffusion approximation, is increasing the resolution of reconstructed images of dynamical parts of a scattering medium.