Simulation of Parallel Beam CT Reconstruction Algorithm Based on Grating Phase Contrast Imaging

Rong Feng, Yang Yadong, Ma Xuehao

Abstract


X-ray phase contrast imaging has higher resolution in the imaging of light element materials than absorption imaging, and is increasingly used in many fields such as medicine, biology and materials science.Grating phase contrast imaging stands out among many phase contrast imaging methods due to its unique advantages.This paper briefly introduces the filtering back projection reconstruction algorithm of the traditional parallel beam CT, and then introduces the Hilbert filter back projection algorithm suitable for the parallel beam CT of the grating phase contrast. Finally, the simulation of the parallel beam CT reconstruction algorithm based on the grating phase contrast imaging is carried out.Through the detailed introduction of the realization principle of traditional CT imaging and phase contrast CT imaging, it can be seen that there is no essential difference between the two implementation principles.The reconstruction algorithm of traditional CT imaging is mature, and then only needs to be slightly improved to be suitable for CT reconstruction based on grating phase contrast imaging.


Keywords


Parallel beam CT; Grating phase contrast imaging; Filtered back projection; Hilbert filter back projection.

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References


Als-Nielsen J, McMorrow D. Elements of modern X-ray physics[M]. John Wiley&Sons Ltd, 2001.

Wilkins S W, Gureyev T E, Gao D, et al. Phase-contrast imaging using polychromatic hard X-rays[J]. Nature, 1996, 384(6607): 335.

Atsushi Momose,Tohoru Takeda,Yuji Itai.Phase-contrast X-ray computed tomography for ovserving biological specimens andorganic materials[J].Rev.Sci.Instrum.,1995,66(2):1434~1436.

Atsushi Momose,Jun Fukuda.Phase-contrast radiographs of nonstained rat cerebellar specimen[J]. Med.Phys.,1995,22(4):375~379.

Zheng Defeng,Wang Xiangzhao.Optimum design of parallelplate interferometer for angular displacement measurement[J].Chin.J.Lasers,2007,34(3):422~426.

A.Snigirev,I.Snigireva,V.Kohnet al..On the possibilities of X-ray phase contrast microimaging by coherent high-energysynchrotron radiation[J].Rev.Sci.Instrum.,1995,66(12):5486~5492.

S.W.Wilkins,T.E.Gureyev,D.Gaoet al..Phase-contrast imaging using polychromatic hard X-rays[J]. Nature,1996,384(28):335~338.

K.A.Nugent,T.E.Gureyev,D.F.Cooksonet al..Quantitative phase imaging using hard X-rays[J]. Phys.Rev.Lett.,1996,77(14):2961~2964.

P.Cloetens,W.Ludwig,J.Baruchelet al..Holotomography:Quantitative phase tomography with micrometer resolution using hard synchrotron radiation X-rays[J].Appl.Phys.Lett.,1999,75(19):2912~2914.

Zeng Fa,Tan Qiaofeng,Wei Xiaofenget al..Complex optical field retrieved from intensity distributions on several fractional Fourier transform planes[J].Chin.J.Lasers,2006,33(12):1621~1625.

T.J.Davis,D.Gao,T.E.Gureyevet al..Phase-contrast imaging of weakly absorbing materials using hard X-rays[J].Nature,1995,373(6515):595~598.

D.Chapman,W.Thomlison,R.E.Johostonet al..Diffraction enhanced X-ray imaging[J].Phys.Med.Biol.,1997,42:2015~2025.

Oral Oltulu,Zhong Zhong,Moumen Hasnahet al..Extraction of extinction,refraction and absorption properties in diffraction enhanced imaging[J].J.Phys.D:Appl.Phys.,2003,36:2152~2156.

Atsushi Momose.Phase-sensitive imaging and phase tomography using X-ray interferometers[J].Opt.Express,2003,11(19):2303~2314.

Timm Weitkamp,Ana Diaz,Bernd Nohammeret al..Hard X-ray phase imaging and tomography with a grating interferometer[C].Proc.SPIE,2004,5535:137~142.

Timm Weitkamp,Ana Diaz,Christian Davidet al..X-ray phase imaging with a grating interferometer[J].Opt.Express,2005,13(16):6296~6304.

Franz Pfeiffer,Timm Weitkamp,Oliver Bunket al..Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources[J].Nature Physics,2006,2:258~261.

C.Kottler,C.David,F.Pfeifferet al..A two-directional approach for grating based differential phase contrast imaging using hard X-ray[J].Opt.Express,2007,15(3):1175~1181.

Pfeiffer F, Weitkamp T, Bunk O, et al. Phase retrieval and differential phase-contrast imaging with low-brilliance X-ray sources[J]. Nature physics, 2006, 2(4): 258-261.

Huang Z F, Kang K J, Li Z, et al. Direct computed tomographic reconstruction for directional-derivative projections of computed tomography of diffraction enhanced imaging[J]. Appl Phys Lett, 2006, 89: 041124.

Keyrilainen J, Fernandez M, Suortti P. Refraction contrast in X-ray imaging[J]. Nuclear Instruments and Methods in Physics Research, 2002, 488: 419-427.

Davis T J, Gao D, Gureyev T E, et al. Phase-contrast imaging of weakly absorbing materials using hard X-rays[J]. Nature, 1995, 373: 595-597.


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