A novel algorithm for transmission image reconstruction of tomographic gamma scaners

A novel algorithm for transmission image reconstruction of tomographic gamma scaners 1 corresp first-author Corresponding author. E-mail address: zhangqh_ciae@sina.com Corresponding author. E-mail address: zhangqh_ciae@sina.com zhangqh_ciae@sina.com 1 1 1 2 2 2 Xi'an Research Institute of High-Tech, Xi'an 710025, China Xi'an Research Institute of High-Tech, Xi'an 710025, China China Institute of Atomic Energy, Beijing 102413, China China Institute of Atomic Energy, Beijing 102413, China It is difficult to develop image reconstruction algorithms for tomographic gamma scanning based on drummed radioactive residues or wastes. In this paper, a novel reconstruction algorithm of transmission image for tomographic gamma scanning is proposed. It is based on the conventional transmission equation and equivalent gamma-ray track length modified by a Monte Carlo method. The algorithm is implemented by simulating the samples on the established platform. For the verification experiments of the algorithm, several cubic voxel samples were designed and manufactured. Experimental tests were conducted. The tomographic gamma scanning of transmission images is compared with the linear attenuation coefficients by the simulated values and experimental data with the algorithm and the reference values. The results show that the absolute relative errors of the reconstructed images are less than 5%. Tomographic gamma scanning (TGS) Linear attenuation coefficient Image reconstruction algorithm Monte Carlo method References Reilly D , Ensslin N , Smith H , et al . Passive Nondestructive Assay of Nuclear Materials , USA, LANL , 1991 , 218 - 234 . Passive Nondestructive Assay of Nuclear Materials P McClelland , V Lewis . Radiometric Non-destructive Assay. UKAEA , Dounreay Vic Lewis National Physical Laboratory , 2003 , 23 - 45 . Radiometric Non-destructive Assay. UKAEA KAWASAKI S , Kondo M , Lzumi S , et al . Appl Radiation Isot , 1990 , 41 : 983 - 987 . Appl Radiation Isot Estep R J , Prettyman T H , Sheppard G A . Nuclear Science and Engineering , 1994 , 118 : 145 - 152 . Nuclear Science and Engineering Camp D C , Martz H E , Roberson G P , et al . Nucl Instru Meth , 2002 , A495 : 69 - 83 . Nucl Instru Meth Davis J , Davies R , Wells P , et al . Materials Evaluation , 1993 , 51 : 332 - 337 . Materials Evaluation Roberson G P , Martz H E , Decman D J , et al . UCRL-JC-118317: Characterization of waste drums using nondestructive active and passive computer tomography , Proceedings of the Nondestructive Assay & Nondestructive Examination Waste Characterization Conference , Idaho, USA, February 1994 , 1 - 34 . UCRL-JC-118317: Characterization of waste drums using nondestructive active and passive computer tomography Zhang Quanhu . Research on the reconstruction techniques for tomographic gamma scanning, PhD Thesis , China Institute of Atomic Energy , 2003 , 22 - 40 . Research on the reconstruction techniques for tomographic gamma scanning, PhD Thesis Palacios J C , Longoria L C , Santos J , et al . Nucl Instr Meth , 2003 , A508 : 500 - 511 . Nucl Instr Meth Becker G K , Mcllwain M E , Connolly M J . Mixed waste focus area/characterization monitoring sensor technology, Nondestructive Waste Assay Capability Evaluation Project, End-User Summary Report , Idaho National Engineering and Environmental Laboratory , Idaho, USA , 1998 , 1 - 50 . Mixed waste focus area/characterization monitoring sensor technology, Nondestructive Waste Assay Capability Evaluation Project, End-User Summary Report Becher G , Mcllwain M , Connolly M . Transuranic and low-level boxed waste form nondestructive assay technology overview and assessment , Idaho National Engineering and Environmental Laboratory , 1999 , 76 - 89 . Transuranic and low-level boxed waste form nondestructive assay technology overview and assessment Kak A C , Slaney M . Principles of Computerized Tomographic Imaging , New York , IEEE Press , 1988 , 308 - 319 . Principles of Computerized Tomographic Imaging Venkataraman R , Croft S , Villani M , et al . The next generation tomographic gamma scanner , Annual Symposium on Safeguards and Nuclear Material Management , London, UK , 2005 , 249 - 280 . The next generation tomographic gamma scanner PEI Lucheng , ZHANG Xiaoze . Monte Carlo Method and Its Applications in Particle Transport Problems , Beijing : Science Press , 1986 , 127 - 140 . (in Chinese) Monte Carlo Method and Its Applications in Particle Transport Problems ZHANG Quanhu , SUI Hongzhi , LV Feng . Atomic Energy Science and Technology , 2003 , 37 : 555 - 557 (in Chinese) Atomic Energy Science and Technology 10.13538/j.1001-8042/nst.21.177-181 Supported by the Foundation for Returned Oversea Chinese Scholars (No.33) 2009-08-15 2010-06-20 2021-01-19 2010 Nuclear Science and Techniques 03 21