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Fiber geometry in the corpus callosum in schizophrenia: Evidence for transcallosal misconnection
(Elsevier BV, 2011)
Background—Structural abnormalities in the callosal fibers connecting the heteromodal association areas of the prefrontal and temporoparietal cortices bilaterally have been suggested to play a role in the etiology of ...
Maximum Entropy Estimation of Glutamate and Glutamine in MR Spectroscopic Imaging
(Springer Science + Business Media, 2014)
Magnetic resonance spectroscopic imaging (MRSI) is often used to estimate the concentration of several brain metabolites. Abnormalities in these concentrations can indicate specific pathology, which can be quite useful in ...
Disruption of function–structure coupling in brain regions sub-serving self monitoring in schizophrenia
(Elsevier BV, 2013)
Deficits in self monitoring are a core feature of cognitive dysfunction in schizophrenia, and may be the basis for disturbances of self and lack of insight, ultimately impacting social functioning. However, the functional ...
Quantitative examination of a novel clustering method using magnetic resonance diffusion tensor tractography
(Elsevier BV, 2009)
MR diffusion tensor imaging (DTI) can measure and visualize organization of white matter fibre tracts in vivo. DTI is a relatively new imaging technique, and new tools developed for quantifying fibre tracts require evaluation. ...
Restoration of DWI Data Using a Rician LMMSE Estimator
(Institute of Electrical & Electronics Engineers (IEEE), 2008)
This paper introduces and analyzes a linear minimum mean square error (LMMSE) estimator using a Rician noise model and its recursive version (RLMMSE) for the restoration of diffusion weighted images. A method to estimate ...
Uncinate fasciculus abnormalities in recent onset schizophrenia and affective psychosis: A diffusion tensor imaging study
(Elsevier BV, 2009)
Two of the most frequently investigated regions in diffusion tensor imaging studies in chronic schizophrenia are the uncinate fasciculus (UF) and cingulum bundle (CB). The purpose of the present study was to determine ...
Neural Tractography Using an Unscented Kalman Filter
(Springer Science + Business Media, 2009)
We describe a technique to simultaneously estimate a local neural fiber model and trace out its path. Existing techniques estimate the local fiber orientation at each voxel independently so there is no running knowledge ...
Statistical Shape Analysis of Brain Structures Using Spherical Wavelets
(2007)
We present a novel method of statistical surface-based morphometry based on the use of non-parametric permutation tests and a spherical wavelet (SWC) shape representation. As an application, we analyze two brain structures, ...
Attentional networks and cingulum bundle in chronic schizophrenia?
(Elsevier BV, 2007)
Thirty patients with chronic schizophrenia and 30 age-matched controls performed the Attention Network Test (ANT). A subset of the patient group (n=18) also had available magnetic resonance diffusion tensor imaging (DTI) ...
A Method for Clustering White Matter Fiber Tracts
(American Society of Neuroradiology, 2006)
BACKGROUND/PURPOSE: Despite its potential for visualizing white matter fiber tracts in vivo, diffusion tensor tractography has found only limited applications in clinical research in which specific anatomic connections ...