Local tomography based on grey model
文献类型：期刊论文
| 作者 | Ye, Renzhen2; Lu, Xiaoqiang1 ; Liu, Haihua
|
| 刊名 | neurocomputing
 |
| 出版日期 | 2013-02-04 |
| 卷号 | 101页码:10-17 |
| 关键词 | Computed tomography Region of interest (ROI) Grey model Filter matrices Wavelet |
| 英文摘要 | this paper studied region-of-interest (roi) problem of computed tomography. it is necessary to use almost local projection data to reduce radiation exposure or time in medical imaging when only a small part of the patient's body needs to be viewed. improving the quality of reconstructed roi and reducing radiation exposure are our aims. however, the traditional local tomography algorithm has difficulty in reconstructing the roi due to significant truncation artifacts. in this paper, a new grey model based method is reported for roi image reconstruction from truncated projection data. by using grey model, the proposed method can extrapolate the truncated projection data, and reconstruct the roi from a set of its projections. as a result, about 75% of full projection data are saved, as compared with other traditional approachs, in reconstructing a local region of 32 pixels in radius in an image of 256 x 256 pixels. experimental results show that the proposed method exhibits more saving in exposure as compared with other local tomography algorithms and results in better quality of the reconstructed image. (c) 2012 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | computer science, artificial intelligence |
| 研究领域[WOS] | computer science |
| 关键词[WOS] | of-interest tomography ; radon-transform ; image-reconstruction ; region ; projections |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000312171100002 |
| 公开日期 | 2015-06-30 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/23437]  |
| 专题 | 西安光学精密机械研究所_光学影像学习与分析中心 |
| 作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Ctr OPT IMagery Anal & Learning OPTIMAL, Xian 710119, Shaanxi, Peoples R China 2.Huazhong Agr Univ, Coll Sci, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Renzhen,Lu, Xiaoqiang,Liu, Haihua. Local tomography based on grey model[J]. neurocomputing,2013,101:10-17. |
| APA | Ye, Renzhen,Lu, Xiaoqiang,&Liu, Haihua.(2013).Local tomography based on grey model.neurocomputing,101,10-17. |
| MLA | Ye, Renzhen,et al."Local tomography based on grey model".neurocomputing 101(2013):10-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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