Study of image reconstruction using dynamic grids in tomographic gamma scanning

Cheng LIU; Weiguo GU; Nan QIAN; Dezhong WANG

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

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Study of image reconstruction using dynamic grids in tomographic gamma scanning

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- Study of image reconstruction using dynamic grids in tomographic gamma scanning
- Nuclear Science and Techniques Vol. 23, Issue 5, (2012)
- Affiliations：
  
  1.School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Author bio：
  
  Corresponding author. E-mail address: guweiguo@sjtu.edu.cn
- Funds：
- DOI：10.13538/j.1001-8042/nst.23.277-283
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Cheng LIU, Weiguo GU, Nan QIAN, et al. Study of image reconstruction using dynamic grids in tomographic gamma scanning. [J]. Nuclear Science and Techniques 23(5):277-283(2012)
DOI：

Cheng LIU, Weiguo GU, Nan QIAN, et al. Study of image reconstruction using dynamic grids in tomographic gamma scanning. [J]. Nuclear Science and Techniques 23(5):277-283(2012) DOI： 10.13538/j.1001-8042/nst.23.277-283.

摘要

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.

关键词

Keywords

Tomographic gamma scanningEmission reconstructionTransmission reconstructionDynamic grids

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