Séminaire de Cécilia Tarpau

Jeudi 11 Février, 14h00 (en distanciel sur Microsoft Teams) ( Team CY Warwick Theoretical Physics )

Circular Compton Scattering Tomography : concept, modelling and associated inverse problems

Cécilia TARPAU
( LPTM CY CPU )

Compton scattering tomography (CST) is an imaging technique exploiting Compton scattered radiation to scan objects, unlike conventional computed tomography which only considers transmitted radiation.
The objective of my thesis is to introduce a modality of Compton scattering tomography. The proposed system is made of a fixed source and detectors placed on a fixed ring passing through the source. This modality, called Circular CST (CCST), allows to register a complete set of data and offers many advantages like compactness or the absence of moving components.
The modelling of data acquisition for the CCST leads to a Radon transform on a family of circle arcs and image reconstruction requires its inversion.
In this talk, I will present the different approaches I have proposed to invert this Radon transform. Numerical simulations are carried out to illustrate the proposed algorithms.


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