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Now showing items 31-40 of 49
The Sport Concussion Education Project. A brief report on an educational initiative: from concept to curriculum
(Journal of Neurosurgery Publishing Group (JNSPG), 2014)
Current research on concussion is primarily focused on injury identification and treatment. Prevention initiatives are, however, important for reducing the incidence of brain injury. This report examines the development ...
An elliptic PDE approach for shape characterization
(IEEE, 2004)
This paper presents a novel approach to analyze the shape of anatomical structures. Our methodology is rooted in classical physics and in particular Poisson's equation, a fundamental partial differential equation [1]. The ...
Global Medical Shape Analysis Using the Laplace-Beltrami Spectrum
(Springer, 2007)
This paper proposes to use the Laplace-Beltrami spectrum (LBS) as a global shape descriptor for medical shape analysis, allowing for shape comparisons using minimal shape preprocessing: no registration, mapping, or remeshing ...
A filtered approach to neural tractography using the Watson directional function
(Elsevier BV, 2010)
We propose a technique to simultaneously estimate the local fiber orientations and perform multifiber tractography. Existing techniques estimate the local fiber orientation at each voxel independently so there is no running ...
Electrophysiological and diffusion tensor imaging evidence of delayed corollary discharges in patients with schizophrenia
(Cambridge University Press (CUP), 2010)
Patients with schizophrenia (SZ) characteristically exhibit supranormal levels of cortical activity to self-induced sensory stimuli, ostensibly because of abnormalities in the neural signals (corollary discharges, CDs) ...
Shape abnormalities of caudate nucleus in schizotypal personality disorder
(Elsevier BV, 2009)
Background: Previously, we reported abnormal volume and global shape in the caudate nucleus in schizotypal personality disorder (SPD). Here, we use a new shape measure which importantly permits local in addition to global ...
Reduced interhemispheric connectivity in schizophrenia-tractography based segmentation of the corpus callosum
(Elsevier BV, 2008)
Background: A reduction in interhemispheric connectivity is thought to contribute to the etiology of schizophrenia. Diffusion Tensor Imaging (DTI) measures the diffusion of water and can be used to describe the integrity ...
Tensor kernels for simultaneous fiber model estimation and tractography
(Wiley-Blackwell, 2010)
This paper proposes a novel framework for joint orientation distribution function (ODF) estimation and tractography based on a new class of tensor-kernels. Existing techniques estimate the local fiber orientation at each ...
Excessive Extracellular Volume Reveals a Neurodegenerative Pattern in Schizophrenia Onset
(Society for Neuroscience, 2012)
Diffusion MRI has been successful in identifying the existence of white matter abnormalities in schizophrenia in vivo. However, the role of these abnormalities in the etiology of schizophrenia is not well understood. ...
An In Vivo MRI Study of Prefrontal Cortical Complexity in First-Episode Psychosis
(American Psychiatric Publishing, 2005)
Objective: The purpose of this study was to investigate abnormalities in the surface complexity of the prefrontal cortex and in the hemispheric asymmetry of cortical complexity in first-episode patients with schizophrenia. ...