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.

M. K. Nguyen, C. Driol, T. T. Truong, H. Zaidi, "Towards a new concept for high sensitivity Compton scatter emission imaging", J. Europ. Opt. Soc. Rap. Public. 08010 Vol 3 (2008)

10.2971/jeos.2008.08010

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