Compton scattered imaging based on the V-line radon transform and its medical imaging applications
|Published in||Conference proceedings : IEEE Engineering in Medicine and Biology Society. 2010, vol. 2010, p. 4300-4303|
|Abstract||The Radon transform (RT) on straight lines deals as mathematical foundation for many tomographic modalities (e.g. Xray scanner, Positron Emission Tomography), using only primary radiation. In this paper, we consider a new RT defined on a pair of half-lines forming a letter V, arising from the modeling a two-dimensional emission imaging process by Compton scattered gamma rays. We establish its analytic inverse, which is shown to support the feasibility of the reconstruction of a two-dimensional image from scattered radiation collected on a one-dimensional collimated camera. Moreover, a filtered back-projection inversion method is also constructed. Its main advantages are algorithmic efficiency and computational rapidity. We present numerical simulations to illustrate the working. To sum up, the V-line RT leads not only to a new imaging principle, but also to a new concept of detector with high energetic resolution capable to collect the scattered radiation.|
|Keywords||Algorithms — Computer Simulation — *Diagnostic Imaging — Feasibility Studies — *Radon|
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|Research group||Imagerie Médicale (TEP et TEMP) (542)|
|NGUYEN, M. K. et al. Compton scattered imaging based on the V-line radon transform and its medical imaging applications. In: Conference proceedings : IEEE Engineering in Medicine and Biology Society, 2010, vol. 2010, p. 4300-4303. https://archive-ouverte.unige.ch/unige:20532|