Towards a new concept for high sensitivity Compton scatter emission imaging

M. K. Nguyen (1) , C. Driol (2) , T. T. Truong (2)

1 ETIS - UMR 8051 - Equipes Traitement de l'Information et Systèmes
2 LPTM - UMR 8089 - Laboratoire de Physique Théorique et Modélisation

A new efficient scheme for imaging gamma-emitting objects is advocated in this work. It is elaborated on the recent idea of collecting data, using a detector equipped with a parallel-hole collimator, from Compton scattered photons to reconstruct an object in three-dimensions. This paper examines a working mode without collimation, which should increase its sensitivity and field of view. To simplify the otherwise complex mathematical formulation, we choose to discuss the image formation process in two-dimensions, which can be implemented with a slit collimator. Comparison with the standard collimated case, via the analysis of the shapes of the respective point spread functions (PSF), shows marked improvements and numerical simulation results, obtained using a brain phantom, support the viability and attractiveness of this new imaging modality.

Domaines: Imagerie

M. K. Nguyen, C. Driol, T. T. Truong. Towards a new concept for high sensitivity Compton scatter emission imaging. Journal of the European Optical Society : Rapid publications, 2008, pp.08010. ⟨10.2971/jeos.2008.08010⟩. ⟨hal-00672246⟩