Title | Study of generalized Radon transforms and applications in Compton scattering tomography |
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Author | |
Language | English |
File Size | 3.9 MB |
Total Pages | 133 |
List of Figures Introduction Radon transform over generalized Cormack curves Review of Radon transform Standard Radon transform Cormack's class of curves and Radon transform Extension to others kind of curves in the plane Inverse Radon transform over generalized Cormack curves Definition and forward problem Inversion formulae SVD and FBP for A defined over C1 Some examples of curves Conclusion Applications in Compton scattering tomography Basis of conventional and Compton scattering tomographies Ionising radiation : interactions with matter Conventional tomography Motivations behind Compton scattering tomography (CST) CST modality based on CART1 Working principle Norton's inversion method Definition of the CART1 and of its adjoint Modeling of the image formation process Associated inversion formulae Novel CST modality based on CART2 Working principle Definition of the CART2 and of its adjoint Modeling of image formation process Associated inversion formulae Novel CST modality based on CART3 Working principle Defintion of the CART3 and of its adjoint Suited sampling for CART3 Associated inversion formulae Implementation methods for different equations Image formation Noisy data Image reconstruction Simulation Results Conclusion A new concept of bimodality in Compton scattering tomography Attenuation correction algorithms Detection of the contours of the attenuating medium Constant attenuation factor correction Attenuation correction with a given heterogeneous attenuation map Generalized Iterative Pre-Correction algorithm (GIPC) Presentation of the algorithm Application for inverting the attenuated CART2 A novel bimodal system based on scattered radiation A new concept Theory Correction algorithm description Simulation studies Results Conclusion Conclusion and Perspectives Bibliography