Scattered Radiation Emission Imaging: Principles and Applications
Identifieur interne : 000473 ( Ncbi/Checkpoint ); précédent : 000472; suivant : 000474Scattered Radiation Emission Imaging: Principles and Applications
Auteurs : M. K. Nguyen [France] ; T. T. Truong [France] ; M. Morvidone [Argentine] ; H. ZaidiSource :
- International Journal of Biomedical Imaging [ 1687-4188 ] ; 2011.
Abstract
Imaging processes built on the Compton scattering effect have been under continuing investigation since it was first suggested in the 50s. However, despite many innovative contributions, there are still formidable theoretical and technical challenges to overcome. In this paper, we review the state-of-the-art principles of the so-called scattered radiation emission imaging. Basically, it consists of using the cleverly collected scattered radiation from a radiating object to reconstruct its inner structure. Image formation is based on the mathematical concept of compounded conical projection. It entails a Radon transform defined on circular cone surfaces in order to express the scattered radiation flux density on a detecting pixel. We discuss in particular invertible cases of such conical Radon transforms which form a mathematical basis for image reconstruction methods. Numerical simulations performed in two and three space dimensions speak in favor of the viability of this imaging principle and its potential applications in various fields.
Url:
DOI: 10.1155/2011/913893
PubMed: 21747823
PubMed Central: 3124682
Affiliations:
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PMC:3124682Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>Imaging processes built on the Compton scattering effect have been under continuing investigation since it was first suggested in the 50s. However, despite many innovative contributions, there are still formidable theoretical and technical challenges to overcome. In this paper, we review the state-of-the-art principles of the so-called scattered radiation emission imaging. Basically, it consists of using the cleverly collected scattered radiation from a radiating object to reconstruct its inner structure. Image formation is based on the mathematical concept of compounded conical projection. It entails a Radon transform defined on circular cone surfaces in order to express the scattered radiation flux density on a detecting pixel. We discuss in particular invertible cases of such conical Radon transforms which form a mathematical basis for image reconstruction methods. Numerical simulations performed in two and three space dimensions speak in favor of the viability of this imaging principle and its potential applications in various fields.</p>
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