您好，欢迎访问上海市农业科学院 机构知识库！
上海市农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Segmentation of the Thalamus in Multi-Spectral MR Images Using a Combination of Atlas-Based and Gradient Graph Cut Methods

文献类型： 会议论文

第一作者： Ryan Datteri

作者： Ryan Datteri 1 ; Christian Barillot 2 ; Benoit M. Dawant 1 ; Jeremy Lecoeur 2 ;

作者机构： 1.Department of Electrical Engineering and Computer Science, Vanderbilt University Nashville, TN 37235, USA

2.VisAGeS team, INRIA, IRISA, CNRS, INSERM, Rennes, France

关键词： ABA;non-rigid registration;thalamus segmentation;graph cut;spectral gradient

会议名称： Conference on image processing

主办单位：

页码： 76233N.1-76233N.9

摘要： Two popular segmentation methods used today are atlas based and graph cut based segmentation techniques. The atlas based method deforms a manually segmented image onto a target image, resulting in an automatic segmentation. The graph cut segmentation method utilizes the graph cut paradigm by treating image segmentation as a max-flow problem. A specialized form of this algorithm was developed by Lecoeur et al [1], called the spectral graph cut algorithm. The goal of this paper is to combine both of these methods, creating a more stable atlas based segmentation algorithm that is less sensitive to the initial manual segmentation. The registration algorithm is used to automate and initialize the spectral graph cut algorithm as well as add needed spatial information, while the spectral graph cut algorithm is used to increase the robustness of the atlas method. To calculate the sensitivity of the algorithms, the initial manual segmentation of the atlas was both dilated and eroded 2 mm and the segmentation results were calculated. Results show that the atlas based segmentation segments the thalamus well with an average Dice Similarity Coefficient (DSC) of 0.87. The spectral graph cut method shows similar results with an average DSC measure of 0.88, with no statistical difference between the two methods. The atlas based method's DSC value, however, was reduced to 0.76 and 0.67 when dilated and eroded respectively, while the combined method retained a DSC value of 0.81 and 0.74, with a statistical difference found between the two methods.

分类号： R312`R312

  • 相关文献

[1]外源NO对NaCl胁迫下番茄幼苗生长及相关物质含量的影响. 吴雪霞,朱为民,陈建林,查丁石. 2008

[2]Effects of exogenous ABA and cytokinin on leaf photosynthesis and grain protein accumulation in wheat ears cultured in vitro. Xie, ZJ,Jiang, D,Dai, TB,Jing, Q,Cao, WX. 2004

[3]AtMYB12 regulates flavonoids accumulation and abiotic stress tolerance in transgenic Arabidopsis thaliana. Wang, Feibing,Peng, Rihe,Li, Zhenjun,Yao, Quanhong,Kong, Weili,Wong, Gary,Fu, Lifeng.

[4]OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis. Jin, Xiao-Fen,Xiong, Ai-Sheng,Peng, Ri-He,Liu, Jin-Ge,Gao, Feng,Yao, Quan-Hong,Chen, Jian-Min.

[5]VvMYBA6 in the promotion of anthocyanin biosynthesis and salt tolerance in transgenic Arabidopsis. Sun, Miao,Feng, Xin-Xin,Wang, Liang-Ju,Sun, Miao,Gao, Jian-Jie,Peng, Ri-He,Yao, Quan-Hong.

[6]Isolation and characterization of a harvest-induced promoter of an alfalfa gene, hi7. Zhang, Jian,Yu, Wen-Jin,Bahramnejad, Bahman,Erickson, Larry R.,Xiong, Ai-Sheng,Bahramnejad, Bahman,Yu, Wen-Jin,Erickson, Larry R..

[7]A grape bHLH transcription factor gene, VvbHLH1, increases the accumulation of flavonoids and enhances salt and drought tolerance in transgenic Arabidopsis thaliana. Wang, Feibing,Li, Zhenjun,Peng, Rihe,Yao, Quanhong,Zhu, Hong,Chen, Dahu.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：上海市农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台