Image reconstruction using scattering in SPECT medical imaging.
Dr. Matias Courdurier, Facultad de Matemática PUC
14 de mayo de 2014, 15:30
Sala de Seminarios de Física Experimental
Abstract: In the medical imaging technique of Single-Photon Emission Computed Tomography (SPECT), the image
of a source distributed inside the patient is obtained by measuring "ballistic" photons exiting the patient
and assuming a known attenuation map.
In this talk we will present an extended model, based on which we attempt to reconstruct an image of the
source and attenuation maps at the same time using measurements of "ballistic" and "scattered" photons.
We will present some theoretical results on the injectivity of the related linearized transformation and
numerical experiments about the feasibility of this approach.