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检索条件"主题词=Image Processing, Computer-Assisted/methods"
290 条 记 录,以下是161-170 订阅
排序:
An approach to MRI-based dosimetry for transcranial magnetic stimulation
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NEUROimage 2007年 第4期36卷 1171-1178页
作者: Hernandez-Garcia, Luis Lee, Sangwoo Grissom, William Funct MRI Lab Ann Arbor MI 48109 USA
A new MRI-based measurement of the magnetic vector field distribution generated by a transcranial magnetic stimulation (TMS) probe is introduced in this study. Projections of the static magnetic field produced by a DC... 详细信息
来源: 评论
Longitudinal and cross-sectional analysis of atrophy in Alzheimer's disease: Cross-validation of BSI, SIENA and SIENAX
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NEUROimage 2007年 第4期36卷 1200-1206页
作者: Smith, Stephen M. Rao, Anil De Stefano, Nicola Jenkinson, Mark Schott, Jonathan M. Matthews, Paul M. Fox, Nick C. Univ Oxford Ctr Funct MRI Brain Oxford England GlaxoSmithKline Clin Imaging Ctr Hammersmith England Univ Siena Dept Neurol & Behav Sci I-53100 Siena Italy UCL Inst Neurol Dementia Res Ctr London WC1E 6BT England
Brain volume loss (atrophy) is widely used as a marker of disease progression. Atrophy has been measured with a variety of methods, some estimating atrophy rate from two temporally separated scans, and others estimati... 详细信息
来源: 评论
A component based noise correction method (CompCor) for BOLD and perfusion based fMRI
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NEUROimage 2007年 第1期37卷 90-101页
作者: Behzadi, Yashar Restom, Khaled Liau, Joy Liu, Thomas T. Univ Calif San Diego Ctr Funct Magnet Resonance Imaging La Jolla CA 92093 USA Univ Calif San Diego Dept Radiol La Jolla CA 92093 USA Univ Calif San Diego Dept Bioengn La Jolla CA 92093 USA
A component based method (CompCor) for the reduction of noise in both blood oxygenation level-dependent (BOLD) and perfusion-based functional magnetic resonance imaging (fMRI) data is presented. In the proposed method... 详细信息
来源: 评论
Integrating VBM into the general linear model with voxelwise anatomical covariates
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NEUROimage 2007年 第2期34卷 500-508页
作者: Oakes, Terrence R. Fox, Andrew S. Johnstone, Tom Chung, Moo K. Kalin, Ned Davidson, Richard J. Univ Wisconsin Waisman Ctr Waisman Lab Brain Imaging & Behav Madison WI 53705 USA Univ Wisconsin Dept Psychol Madison WI 53706 USA Univ Wisconsin Dept Stat Madison WI 53706 USA Univ Wisconsin Dept Psychiat Madison WI 53706 USA
A current limitation for imaging of brain function is the potential confound of anatomical differences or registration error, which may manifest via apparent functional "activation" for between-subject analy... 详细信息
来源: 评论
EchoComTEE - a simulator for transoesophageal echocardiography
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ANAESTHESIA 2007年 第4期62卷 347-353页
作者: Weidenbach, M. Drachsler, H. Wild, F. Kreutter, S. Razek, V. Grunst, G. Ender, J. Berlage, T. Janousek, J. Univ Leipzig Ctr Heart Dept Paediat Cardiol D-04289 Leipzig Germany Univ Leipzig Ctr Heart Dept Anaesthesiol D-04289 Leipzig Germany Fraunhofer Inst Appl Informat Technol D-53754 St Augustin Germany
Transoesophageal echocardiography (TOE) requires extensive hands-on training, and it is for this purpose we have designed EchoComTEE, a simulator for TOE. It consists of a manikin and dummy probe;according to the posi... 详细信息
来源: 评论
Continuous carry-over designs for fMRI
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NEUROimage 2007年 第4期35卷 1480-1494页
作者: Aguirre, Geoffrey Karl Univ Penn Dept Neurol Philadelphia PA 19104 USA
This paper describes continuous carry-over fMRI experiments. In these studies, stimuli are presented in an unbroken, sequential manner, and can be used to estimate simultaneously the mean difference in neural activity... 详细信息
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A Bayesian framework for global tractography
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NEUROimage 2007年 第1期37卷 116-129页
作者: Jbabdi, S. Woolrich, M. W. Andersson, J. L. R. Behrens, T. E. J. Univ Oxford John Radcliffe Hosp FMRIB Oxford OX3 9DU England Univ Oxford Dept Expt Psychol Oxford England
We readdress the diffusion tractography problem in a global and probabilistic manner. Instead of tracking through local orientations, we parameterise the connexions between brain regions at a global level, and then in... 详细信息
来源: 评论
Effects of diffusion weighting schemes on the reproducibility of DTI-derived fractional anisotropy, mean diffusivity, and principal eigenvector measurements at 1.5T
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NEUROimage 2007年 第4期36卷 1123-1138页
作者: Landman, Bennett A. Farrell, Jonathan A. D. Jones, Craig K. Smith, Seth A. Prince, Jerry L. Mori, Susumu Johns Hopkins Univ Sch Med Russell H Morgan Dept Radiol & Radiol Sci Baltimore MD 21205 USA Johns Hopkins Univ Sch Med Dept Biomed Engn Baltimore MD 21205 USA Kennedy Krieger Inst FM Kirby Res Ctr Funct Brain Imaging Baltimore MD 21205 USA Johns Hopkins Univ Sch Med Dept Biophys & Biophys Chem Baltimore MD 21205 USA Johns Hopkins Univ Dept Elect & Comp Engn Baltimore MD 21205 USA
Diffusion tensor imaging (DTI) is used to study tissue composition and architecture in vivo. To increase the signal to noise ratio (SNR) of DTI contrasts, studies typically use more than the minimum of 6 diffusion wei... 详细信息
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Multivariate examination of brain abnormality using both structural and functional MRI
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NEUROimage 2007年 第4期36卷 1189-1199页
作者: Fan, Yong Rao, Hengyi Hurt, Hallam Giannetta, Joan Korczykowski, Marc Shera, David Avants, Brian B. Gee, James C. Wang, Jiongjiong Shen, Dinggang Univ Penn Dept Radiol Philadelphia PA 19104 USA Univ Penn Ctr Funct Neuroimaging Dept Neurol Philadelphia PA 19104 USA Childrens Hosp Philadelphia Dept Pediat Div Neonatol Philadelphia PA 19104 USA
A multivariate classification approach has been presented to examine the brain abnormalities, i.e., due to prenatal cocaine exposure, using both structural and functional brain images. First, a regional statistical fe... 详细信息
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Hybrid diffusion imaging
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NEUROimage 2007年 第3期36卷 617-629页
作者: Wu, Yu-Chien Alexander, Andrew L. Univ Wisconsin Waisman Ctr Waisman Lab Brain Imaging & Behav Madison WI 53705 USA Univ Wisconsin Dept Radiol Madison WI 53706 USA Univ Wisconsin Dept Med Phys Madison WI 53706 USA Univ Wisconsin Dept Psychiat Madison WI 53706 USA
Diffusion measurements in the human central nervous system are complex to characterize and a broad spectrum of methods have been proposed. In this study, a comprehensive diffusion encoding and analysis approach, hybri... 详细信息
来源: 评论