[1] Sinha V, Srivastava A, Koo Lee H. A novel method for NDT applications using NXCT system at the Missouri University of Science & Technology[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 750, 43-55(2014). http://www.sciencedirect.com/science/article/pii/S016890021400271X

[2] Tamaki M. Conceptual monochromatic digital neutron radiography using continuous cold neutron beam[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 542, 32-37(2005). http://www.sciencedirect.com/science/article/pii/S0168900205001191

[3] Yasuda R, Matsubayashi M, Nakata M et al. Application of neutron imaging plate and neutron CT methods on nuclear fuels and materials[J]. IEEE Transactions on Nuclear Science, 52, 313-316(2005). http://ieeexplore.ieee.org/document/1417156/

[4] Wei G H, Han S B, Chen D F et al. Application of neutron radiography for non-destructive testing nuclear fuel elements[J]. Nuclear Techniques, 35, 821-826(2012).

[5] Strobl M, Manke I, Kardjilov N et al. Advances in neutron radiography and tomography[J]. Journal of Physics D: Applied Physics, 42, 243001(2009). http://www.ingentaconnect.com/content/iop/jphysd/2009/00000042/00000024/art243001

[6] Si K. Application research on CT iterative image reconstruction algorithm of sparse angles projection[D]. Jinan: Shandong University, 2-14(2015).

[7] Ma J M, Zhang J Q, Song G Z et al. Total variation constrained iterative filtered back projection CT reconstruction method[J]. Acta Optica Sinica, 35, 0234002(2015).

[8] Gordon R, Bender R, Herman G T. Algebraic reconstruction techniques (ART) for three-dimensional electron microscopy and X-ray photography[J]. Journal of Theoretical Biology, 29, 471-481(1970). http://europepmc.org/abstract/MED/5492997/reload=0

[9] Gilbert P. Iterative methods for the three-dimensional reconstruction of an object from projections[J]. Journal of Theoretical Biology, 36, 105-117(1972). http://europepmc.org/abstract/med/5070894

[10] Andersen A H, Kak A C. Simultaneous algebraic reconstruction technique (SART): a superior implementation of the ART algorithm[J]. Ultrasonic Imaging, 6, 81-94(1984). http://www.sciencedirect.com/science/article/pii/0161734684900087

[11] Wang L Y, Liu H K, Li L et al. Review of sparse optimization-based computed tomography image reconstruction from few-view projections[J]. Acta Physica Sinica, 63, 208702(2014).

[12] Lin L P, Wang Y G. CT image reconstruction model and algorithm from few views[J]. Journal of Beijing University of Aeronautics and Astronautics, 43, 823-830(2017).

[13] Rudin L I, Osher S, Fatemi E. Nonlinear total variation based noise removal algorithms[J]. Physica D: Nonlinear Phenomena, 60, 259-268(1992). http://www.sciencedirect.com/science/article/pii/016727899290242F

[14] Sidky E Y, Kao C M, Pan X. Accurate image reconstruction from few-views and limited-angle data in divergent-beam CT[J]. Journal of X-ray Science and Technology, 14, 119-139(2006). http://arxiv.org/abs/0904.4495

[15] Sidky E Y, Pan X C. Image reconstruction in circular cone-beam computed tomography by constrained, total-variation minimization[J]. Physics in Medicine and Biology, 53, 4777-4807(2008). http://www.ncbi.nlm.nih.gov/pubmed/18701771

[16] Zhang H J, Kong H H, Sun Y G. Weighted NLTV reconstruction algorithm based on structural prior information for spectral CT[J]. Acta Optica Sinica, 38, 0811003(2018).

[17] Yu W. Investigation of reconstruction algorithms for incomplete CT projections[D]. Chongqing: Chongqing University, 24-35(2014).

[18] Yu W, Zeng L. A novel weighted total difference based image reconstruction algorithm for few-view computed tomography[J]. PLoS One, 9, e109345(2014). http://europepmc.org/abstract/med/25275385

[19] Yan B, Li L[M]. CT image reconstruction algorithm, 5-14(2014).

[20] Shepp L A, Logan B F. The Fourier reconstruction of a head section[J]. IEEE Transactions on Nuclear Science, 21, 21-43(1974). http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6499235

[21] Yu H Y, Wang G. A soft-threshold filtering approach for reconstruction from a limited number of projections[J]. Physics in Medicine and Biology, 55, 3905-3916(2010). http://pubmedcentralcanada.ca/pmcc/articles/PMC3021964/

[22] Shu X B, Ahuja N. Hybrid compressive sampling via a new total variation TVL1[M]. // Daniilidis K, Maragos P, Paragios N. Lecture notes in computer science. Berlin, Heidelberg: Springer, 6316, 393-404(2010).

[23] Liu B D, Wang G, Ritman E L et al. Image reconstruction from limited angle projections collected by multisource interior X-ray imaging systems[J]. Physics in Medicine and Biology, 56, 6337-6357(2011). http://www.ncbi.nlm.nih.gov/pubmed/21908905