Dominique Chambellan

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In this paper, we propose a novel approach to improve the trade-off between the spatial resolution and the sensitivity of existing nuclear imaging systems in emission tomography for 511 keV-photons. Although emission tomography suffers from the low amount of emitted photons in the object, partial transparency of collimators and low sensitivity of detectors,(More)
We report here on the 2007 discovery, in perfect archaeological context, of part of the engraved and ocre-stained undersurface of the collapsed rockshelter ceiling from Abri Castanet, Dordogne, France. The decorated surface of the 1.5-t roof-collapse block was in direct contact with the exposed archaeological surface onto which it fell. Because there was no(More)
Emission tomography has provided a new insight in brain mechanisms past years. Although reconstructions are nowadays mostly static, trend is going toward dynamic acquisitions and reconstructions. This opens a new range of investigations, for instance for drugs discovery. Indeed new drugs are studied through the dynamic ability of tissues to catch them.(More)
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