An improved iterative sense reconstruction method
文献类型：期刊论文
| 作者 | Qu, Peng; Luo, Jing; Zhang, Bida; Wang, Jianmin; Shen, Gary X. |
| 刊名 | Concepts in magnetic resonance part b-magnetic resonance engineering
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 31b期号:1页码:44-50 |
| 关键词 | Parallel mri Sense Non-cartesian trajectories Iterative reconstruction Regularization |
| ISSN号 | 1552-5031 |
| DOI | 10.1002/cmr.b.20076 |
| 通讯作者 | Shen, gary x.(gxshen@eee.hku.hk) |
| 英文摘要 | The conjugate-gradient (cg)-based non-cartesian sense reconstruction usually exhibits unstable convergence behavior due to the ill conditioning of the generalized encoding matrix (gem). to overcome this difficulty, an improved iterative sense approach is presented. during a so-called lanczos iteration process, which is equally efficient as cg, the inversion of gem can be gradually approximated by calculating inversions of a series of small tridiagonal matrices. in this fashion, inner regularization can be incorporated into the reconstruction without touching the iteration process. the degree of regularization can be determined based on the eigenvalue information provided by the lanczos process. with inner regularization adaptively applied for every iteration vector, the convergence behavior of iterative sense can be significantly improved and noise amplification can be avoided. the feasibility of this novel iterative sense technique is demonstrated by radial and spiral mri experiments. (c) 2007 wiley periodicals, inc. |
| WOS关键词 | PARALLEL ; MRI |
| WOS研究方向 | Chemistry ; Instruments & Instrumentation ; Physics ; Spectroscopy |
| WOS类目 | Chemistry, Physical ; Instruments & Instrumentation ; Physics, Atomic, Molecular & Chemical ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000244584500005 |
| 出版者 | JOHN WILEY & SONS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2382984 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Shen, Gary X. |
| 作者单位 | 1.Chinese Acad Sci, Grad Sch, Key Lab Cognit Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Biophys, Beijing 100080, Peoples R China 3.Univ Hong Kong, Dept Elect & Elect Engn, Pokfulam, Hong Kong, Peoples R China 4.Siemens Mindit Magnet Resonance Ltd, Shenzhen, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Peng,Luo, Jing,Zhang, Bida,et al. An improved iterative sense reconstruction method[J]. Concepts in magnetic resonance part b-magnetic resonance engineering,2007,31b(1):44-50. |
| APA | Qu, Peng,Luo, Jing,Zhang, Bida,Wang, Jianmin,&Shen, Gary X..(2007).An improved iterative sense reconstruction method.Concepts in magnetic resonance part b-magnetic resonance engineering,31b(1),44-50. |
| MLA | Qu, Peng,et al."An improved iterative sense reconstruction method".Concepts in magnetic resonance part b-magnetic resonance engineering 31b.1(2007):44-50. |
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来源：中国科学院大学
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