Study on the Image Reconstruction Subset Sort of OSEM Algorithm

任变青; 潘晋孝

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Study on the Image Reconstruction Subset Sort of OSEM Algorithm

更新时间：2026-09-14

- Study on the Image Reconstruction Subset Sort of OSEM Algorithm
- OSEM算法在图像重建中子集分类的研究
- Issue 5, Pages: 462-466(2006)
- 作者机构：
  
  中北大学理学院
- 作者简介：
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- Published：2006
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任变青, 潘晋孝. Study on the Image Reconstruction Subset Sort of OSEM Algorithm[J]. 2006, (5): 462-466.
DOI：

任变青, 潘晋孝. Study on the Image Reconstruction Subset Sort of OSEM Algorithm[J]. 2006, (5): 462-466. DOI：

摘要

通过O SEM算法在不同子集下重建图像的仿真研究

分析在相同迭代次数和时间下子集数对重建图像收敛速度的影响

得到对含噪声的投影数据在子集数多时重建图像会随着迭代次数的增加而变差.若采用序列划分子集(即子集数由多到少)重建图像则可避免这种情况.通过对各种子集分类在相同时间内重建图像误差的比较

得到序列划分子集方法能在较少迭代次数和较短时间内得到好的重建图像.

Abstract

This paper studies OSEM image reconstruction algorithm on different subsets of a series of numerical simulated data

and analyzes the influence on the image convergence rate in different subsets of the same iterative number and time.In case of more subsets

the reconstructed image becomes worse by increasing iteration number and times from noise of added projective data.Reconstructing image with sequence subset(decreasing subset) can avoid that case.By comparing error of image reconstruction with different subset sort in the same time

good image on less iteration number and shorter time can be obtained by properly selected sequence subset.

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references

Hudson H M a lco lm,L ark in R ichard S.A cce lerated im age reconstruction us ing ordered subset of pro jection D ata[J].IEEE T rans on M ed ica l Im ag ing,1994,13(4):601-609.

K adrm as D an J.S tatistica lly regu lated and adaptive EM reconstruction for em iss ion com pu ted tom ography[J].IEEET rans on N uclear Sc ience,2001,48(3):790-798.

印胤,刘力.扇束图像重建中O SEM算法及子集划分的研究[J].CT理论与应用研究,2003,12(3):1-8.Y in y in,L iu li.S tudy of O SEM w ith d ifferen t subsets in fan beam reconstruction[J].Com pu terized T om ographyT heory and A pp lications,2003,12(3):1-8.(in Ch inese)

Sheng Jinhua,L iu D erong.A n im proved m ax im um like lihood approach to im age reconstruction us ing ordered subsetsand data subd iv is ions[J].IEEE T rans on N uclear Sc ience,2004,51(1):130-135.

潘晋孝,韩焱,郭梁.EM算法重建图像的精度分析[J].华北工学院学报,2003(3):157-161.Pan Jinx iao,H an Y an,G uo liang.A na lys is on the im age reconstruction accuracy of the EM a lgorithm[J].Journa l ofN orth Ch ina Institu te of T echno logy,2003(3):157-161.(in Ch inese)

王京东,夏顺仁,吕维雪.图像重建算法评价和误差分析的研究进展[J].国外医学生物医学工程分册,1998,6(21):332-337.

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