Data Evaluation and Visibility in Single Beam Scanner of Gamma Ray Tomography

Carlos Costa Dantas, Alex Elton Moura, Tiago Leite Rolim, Silvio de Barros Melo, Valdemir Alexandre dos Santos, Emerson Alexandre de Oliveira Lima

Department of Chemistry, Catholic University of Pernambuco, Recife, Brazil.
Department of Mathematics, University of Pernambuco, Recife, Brazil.
Department of Mechanical Engineering, Federal University of Pernambuco, Recife, Brazil.
Department of Nuclear Energy, Federal University of Pernambuco, Recife, Brazil.
Informatics Center, Federal University of Pernambuco, Recife, Brazil.

DOI: 10.4236/wjnst.2013.31004                

Abstract

In this paper, data analysis and modeling of gamma ray tomography taken into account spatial resolution and source of errors and the attenuation coefficient measurement in row data from tomography process are presented. The results showed that this method is simple, effective and should be prior to any data treatment for opaque vessel reactor and by reconstruction algorithm in process imaging.

Keywords

Attenuation Coefficient; Data Modeling; Row Data; Transmission Tomography

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	IAEA-International Atomic Energy Agency, “Industrial Process Gamma Tomography,” IAEA-TECDOC-1589, 2007.
[2]	M. Azzi, P. Turlier, J. R. Bernard and L. Garnero, “Mapping Solid Concentration in a Fluid Bed Using Gammametry,” Powder Technology, Vol. 67, No. 1, 1991, pp. 27-36. doi:10.1016/0032-5910(91)80023-C
[3]	J. Gilby and J. Walton, “Data Visualization,” Software Support for Metrology Good Practice Guide No. 13, 2003.
[4]	J. Sanyal, S. Zhang, G. Bhattacharya, P. Amburn and R. J. Moorhead, “A User Study to Compare Four Uncertainty Visualization Methods for 1D and 2D Datasets,” IEEE Transactions on Visualization and Computer Graphics, Vol. 15, No. 6, 2009, pp. 1209-1218.
[5]	P. C. L. da Costa, C. C. Dantas, C. A. B. O. Lira and V. A. Dos Santos, “A Compton Filter to Improve Photopeak Intensity Evaluation in Gamma Ray Spectra,” Nuclear Instruments and Methods in Physics Research Section B, Vol. 226, No. 3, 2004, pp. 419-425. doi:10.1016/j.nimb.2004.05.037
[6]	C. C. Dantas, S. B. Melo, E. F. Oliveira, F. P. M. Sim?es, M. G. dos Santos and V. A. dos Santos, “Measurement of Density Distribution of a Cracking Catalyst in Experimental Riser with a Sampling Procedure for Gamma Ray Tomography,” Nuclear Instruments and Methods in Physics Research Section B, Vol. 266, No. 5, 2008, pp. 841848. doi:10.1016/j.nimb.2008.01.029
[7]	A. E. Moura, T. L. Rolim, C. C. Dantas, L. G. Charamba, D. A. Vasconcelos, S. B. Melo, V. A. dos Santos, E. F. Carvalho, J. A. C. Silva and R. Narain, “Gamma Ray Computer Aided Tomography of Adaptive Scanner System for Different Type and Size Columns,” IMEKO Metrology Congress—II CIMEC, Natal, 2011.
[8]	C. C. Dantas, R. Narain, V. A. dos Santos and A. C. B. A. de Melo, “Catalyst Concentration Distribution in Fluidized Bed by Gamma-Ray Absorption,” Journal of Radioanalytical and Nuclear Chemistry, Vol. 269, No. 2, 2006, pp. 425-428. doi:10.1007/s10967-006-0402-4
[9]	A. Aquino-Filho, C. C. Dantas, M. L. Crispino, E. A. O. Lima and V. A. Dos Santos, “A Gamma Ray Tomography Design for Catalyst Concentration Reconstruction in a FCC Type Riser,” International Nuclear Atlantic Conference, Santos, 2005.
[10]	C. C. Dantas, V. A. dos Santos, A. C. B. A. Melo and R. Van Grieken, “Precise Gamma Ray Measurement of the Radial Distribution of a Cracking Catalyst at Diluted Concentrations in a Glass Riser,” Nuclear Instruments and Methods in Physics Research Section B, Vol. 251, No. 1, 2006, pp. 201-208. doi:10.1016/j.nimb.2006.05.009
[11]	G. V. Vasconcelos, S. B. Melo, C. C. Dantas, I. Malta, R. Oliveira and E. F. Oliveira, “A Particle System Approach to Industrial Topographic Reconstruction,” Measurement Science and Technology, Vol. 22, 2011, Article ID: 104003.
[12]	J. H. Hubbell and S. M. Seltzer, “Tables of X-Ray Mass Attenuation Coefficients,” Radiation and Biomolecular Physics Division, PML, NIST, 1996.
[13]	K. Juda, “Modeling of the Air Pollution in the Cracow Area,” Atmospheric Environment, Vol. 20, No. 12, 1986, pp. 2449-2458.
[14]	H. Wang, “Measures of Agreement for Rotation Matrices with Application to Vectorcardiography Data,” InternetWanghn Paper, Nonparcomp Report, 2008.