Study of image reconstruction using dynamic grids in tomographic gamma scanning

LOW ENERGY ACCELERATOR AND RADIATION APPLICATIONS

Study of image reconstruction using dynamic grids in tomographic gamma scanning

LIU Cheng，

GU Weiguo，

QIAN Nan，

WANG Dezhong

Nuclear Science and Techniques

Vol.23, No.5

pp.277-283

Published in print 20 Oct 2012

DOI：10.13538/j.1001-8042/nst.23.277-283

47201

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.

Tomographic gamma scanningEmission reconstructionTransmission reconstructionDynamic grids

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