CMIC Seminar: Reconstruction methods for optical imaging

Speaker: Teresa Correia
UCL Contact: Dominique Drai (Visitors from outside UCL please email in advance).
Date/Time: 15 Jan 14, 13:00 - 14:00
Venue: 1.19

Abstract

Optical imaging modalities use near-infrared light to infer scattering and absorption coefficients, and hence, the presence of structures within tissues. Fluorescence markers, which accumulate in specific regions, can be used to monitor functional and metabolic activity in small animals. These are mostly used to detect tumours, monitor progression of disease, response to therapy, gene expression and protein-protein interactions.

I will talk about two optical imaging modalities: fluorescence diffuse optical tomography (fDOT) and optical projection tomography (OPT). The main issues in fDOT are the ill-posedness of the problem, which requires the use of regularisation techniques, the large data sets and solution spaces and the presence of heterogeneities in the tissues. I will show how nonlinear anisotropic dif