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学科主题: 临床医学
题名:
Asymmetry analysis of cingulum based on scale-invariant parameterization by diffusion tensor imaging
作者: Gong, GL; Jiang, TZ; Zhu, CZ; Zang, YF; Wang, F; Xie, S; Xiao, JX; Gu, XM
关键词: asymmetry ; cingulum ; DTI ; fiber-based analysis ; diffusion anisotropy
刊名: HUMAN BRAIN MAPPING
发表日期: 2005-02-01
DOI: 10.1002/hbm.20072
卷: 24, 期:2, 页:92-98
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Neurosciences ; Neuroimaging ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]: Neurosciences & Neurology ; Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]: HUMAN-BRAIN ; ANTERIOR CINGULATE ; AXONAL TRACKING ; SCHIZOPHRENIA ; CORTEX ; MRI ; ORIENTATION ; MORPHOLOGY ; INTEGRITY ; ATTENTION
英文摘要:

Current analysis of diffusion tensor imaging (DTI) is based mostly on a region of interest (ROI) in an image dataset, which is specified by users. This method is not always reliable, however, because of the uncertainty of manual specification. We introduce an improved fiber-based scheme rather than an RCI-based analysis to study in DTI datasets of 31 normal subjects the asymmetry of the cingulum, which 7 is one of the most prominent white matter fiber tracts of the limbic system. The present method can automatically extract the quantitative anisotropy properties along the cingulum bundles from tractography. Moreover, statistical analysis was carried out after anatomic correspondence specific to the cingulum across subjects was established, rather than the traditional whole-brain registration. The main merit of our method compared to existing counterparts is that to find such anatomic correspondence in cingulum, a scale-invariant parameterization method by arc-angle was proposed. It can give a continuous and exact description on any segment of cingulum. More interestingly, a significant left-greater-than-right asymmetry pattern was obtained in most segments of cingulum bundle (-50-25 degrees), except in the most posterior portion of cingulum (25-50 degrees). (C) 2004 Wiley-Liss. Inc.

语种: 英语
WOS记录号: WOS:000226677100002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66393
Appears in Collections:北京大学第一临床医学院_放射治疗科_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100080, Peoples R China
2.Peking Univ, Hosp 1, Dept Radiol, Beijing 100871, Peoples R China

Recommended Citation:
Gong, GL,Jiang, TZ,Zhu, CZ,et al. Asymmetry analysis of cingulum based on scale-invariant parameterization by diffusion tensor imaging[J]. HUMAN BRAIN MAPPING,2005,24(2):92-98.
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