Study of image reconstruction using dynamic grids in tomographic gamma scanning
NUCLEAR SCIENCE AND TECHNIQUES(2012)
Abstract
In this paper, a new image reconstruction algorithm employing dynamic grids technique is proposed for tomographic gamma scanning. The key feature of the algorithm is the use of adaptive grid refinement in areas that indicate large values. Simulation results show that the application of dynamic grids has a good performance in emission reconstruction with a distinct advantage in the accurate positioning of the 'hot spots' and reducing the number of grids, but doesn't achieve a tangible improvement in transmission reconstruction.
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Key words
Tomographic gamma scanning,Emission reconstruction,Transmission reconstruction,Dynamic grids
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