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Creator | Title | Description | Subject | Date |
| 26 |
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Gerig, Guido | Unbiased diffeomorphic atlas construction for computational anatomy | Construction of population atlases is a key issue in medical image analysis, and particularly in brain mapping. Large sets of images are mapped into a common coordinate system to study intra-population variability and inter-population differences, to provide voxel-wise mapping of functional sites, a... | | 2004-01-01 |
| 27 |
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Taylor, Mark | Understanding the community based participatory research (CBPR) approach: case study in Ghana | In 2003, the University of Utah, in cooperation with Kwame Nkrumah University of Science and Technology (KNUST), Komfo Anokye Teaching Hospital (KATH), the Atwima Nwabiagya District Assembly and Barekuma community leaders, formed what is known as the Barekuma Collaborative Community Development Proj... | | 2011-12-01 |
| 28 |
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Dannhauer, Moritz | Visualizing simulated electrical fields from electroencephalography and transcranial electric brain stimulation: a comparative evaluation | Electrical activity of neuronal populations is a crucial aspect of brain activity. This activity is not measured directly but recorded as electrical potential changes using head surface electrodes (electroencephalogram - EEG). Head surface electrodes can also be deployed to inject electrical current... | | 2014-01-01 |
| 29 |
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Gerig, Guido | Measures for validation of DTI tractography | The evaluation of analysis methods for diffusion tensor imaging (DTI) remains challenging due to the lack of gold standards and validation frameworks. Significant work remains in developing metrics for comparing fiber bundles generated from streamline tractography. We propose a set of volumetric and... | | 2012-01-01 |
| 30 |
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Rondina, Matthew Thomas | Emerging evidence for platelets as immune and inflammatory effector cells | While traditionally recognized for their roles in hemostatic pathways, emerging evidence demonstrates that platelets have previously unrecognized, dynamic roles that span the immune continuum. These newly recognized platelet functions, including the secretion of immune mediators, interactions with e... | | 2014-01-01 |
| 31 |
 |
Gur, Yaniv | Generalized hardi invariants by method of tensor contraction | We propose a 3D object recognition technique to construct rotation invariant feature vectors for high angular resolution diffusion imaging (HARDI). This method uses the spherical harmonics (SH) expansion and is based on generating rank-1 contravariant tensors using the SH coefficients, and contracti... | | 2014-01-01 |
| 32 |
 |
Gerig, Guido | Longitudinal growth modeling of discrete-time functions with application to DTI tract evolution in early neurodevelopment | We present a new framework for spatiotemporal analysis of parameterized functions attributed by properties of 4D longitudinal image data. Our driving application is the measurement of temporal change in white matter diffusivity of fiber tracts. A smooth temporal modeling of change from a discrete-ti... | | 2012-01-01 |
| 33 |
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Gur, Yaniv | Graph diffusion distance: a difference measure for weighted graphs based on the graph Laplacian exponential kernel | We propose a novel difference metric, called the graph diffusion distance (GDD), for quantifying the difference between two weighted graphs with the same number of vertices. Our approach is based on measuring the average similarity of heat diffusion on each graph. We compute the graph Laplacian expo... | | 2013-01-01 |
| 34 |
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Macleod, Robert S. | Identification and acute targeting of gaps in atrial ablation lesion sets using a real-time magnetic resonance imaging system | Background-Radiofrequency ablation is routinely used to treat cardiac arrhythmias, but gaps remain in ablation lesion sets because there is no direct visualization of ablation-related changes. In this study, we acutely identify and target gaps using a real-time magnetic resonance imaging (RT-MRI) sy... | | 2012-01-01 |
| 35 |
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Gerig, Guido | Efficient probabilistic and geometric anatomical mapping using particle mesh approximation on GPUs | Deformable image registration in the presence of considerable contrast differences and large size and shape changes presents significant research challenges. First, it requires a robust registration framework that does not depend on intensity measurements and can handle large nonlinear shape variati... | | 2011-01-01 |
| 36 |
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Seyedhosseini Tarzjani, Seyed Mojtaba | Image segmentation with cascaded hierarchical models and logistic disjunctive normal networks | Contextual information plays an important role in solving vision problems such as image segmentation. However, extracting contextual information and using it in an effective way remains a difficult problem. To address this challenge, we propose a multi-resolution contextual framework, called cascade... | | 2013-01-01 |
| 37 |
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Gerig, Guido | Image registration driven by combined probabilistic and geometric descriptors | Deformable image registration in the presence of considerable contrast dierences and large-scale size and shape changes represents a signicant challenge for image registration. A representative driving application is the study of early brain development in neuroimaging, which requires co-registratio... | | 2010-01-01 |
| 38 |
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Gerig, Guido | Images in neuroscience: Fetal and Neonatal Brain Development | In the top row of longitudinal T1-weighted magnetic resonance images of the same child (and same scale), note the dramatic increase in total brain size as well as in white matter intensity over early development. In the bottom row of diffusion tensor images, white matter tractography of a neonate, o... | | 2006-01-01 |
| 39 |
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Gerig, Guido | A joint framework for 4D segmentation and estimation of smooth temporal appearance changes | Medical imaging studies increasingly use longitudinal images of individual subjects in order to follow-up changes due to development, degeneration, disease progression or efficacy of therapeutic intervention. Repeated image data of individuals are highly correlated, and the strong causality of infor... | | 2014-01-01 |
| 40 |
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Gerig, Guido | A longitudinal structural MRI study of change in regional contrast in Autism Spectrum Disorder | Authors: Avantika Vardhan1, Joseph Piven2, Marcel Prastawa3, Guido Gerig3 Institutions: 1Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, United States, 2Dept of Psychiatry, UNC School of Medicine, Chapel Hill, NC, 3University of Utah, Salt Lake City, UT Introduction: ... | | 2013-01-01 |
| 41 |
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Maas, Steve | Accuracy and feasibility of dual fluoroscopy and model-based tracking to quantify in vivo hip kinematics during clinical exams | Accurate measurements of in-vivo hip kinematics may elucidate the mechanisms responsible for impaired function and chondrolabral damage in hips with femoroacetabular impingement (FAI). The objectives of this study were to quantify the accuracy and demonstrate the feasibility of using dual fluoroscop... | | 2014-01-01 |
| 42 |
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Gerig, Guido | Brain volumes in psychotic youth with schizophrenia and mood disorders | Background: We sought to test the hypothesis that deficits in grey matter volume are characteristic of psychotic youth with early-onset schizophrenia-spectrum disorders (EOSS) but not of psychotic youth with early-onset mood disorders (EOMD). Methods: We used magnetic resonance imaging to examine br... | | 2010-01-01 |
| 43 |
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Gerig, Guido | Brain maturation of newborns and infants | Recently, imaging studies of early human development have received more attention, as improved modeling methods might lead to a clearer understanding of the origin, timing, and nature of differences in neurodevelopmental disorders. Non-invasivemagnetic resonance imaging (MRI) can provide three-dimen... | | 2011-01-01 |
| 44 |
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Wunderlich, Adam James | A nonparametric procedure for comparing the areas under correlated LROC curves | In contrast to the receiver operating characteristic (ROC) assessment paradigm, localization ROC (LROC) analysis provides a means to jointly assess the accuracy of localization and detection in an observer study. In a typical multireader, multicase (MRMC) evaluation, the data sets are paired so that... | | 2012-01-01 |
| 45 |
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Gerig, Guido | A new framework for analyzing white matter maturation in early brain development | The trajectory of early brain development is marked by rapid growth presented by volume but also by tissue property changes. Capturing regional characteristics of axonal structuring and myelination via neuroimaging requires analysis of longitudinal image data with multiple modalities. Complementary ... | | 2010-01-01 |
| 46 |
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Gerig, Guido | Characterizing growth patterns in longitudinal MRI using image contrast | Understanding the growth patterns of the early brain is crucial to the study of neuro-development. In the early stages of brain growth, a rapid sequence of biophysical and chemical processes take place. A crucial component of these processes, known as myelination, consists of the formation of a myel... | | 2014-01-01 |
| 47 |
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Gerig, Guido | A preliminary study on the effect of motion correction on HARDI reconstruction | Post-acquisition motion correction is widely performed in diffusion-weighted imaging (DWI) to guarantee voxel-wise correspondence between DWIs. Whereas this is primarily motivated to save as many scans as possible if corrupted by motion, users do not fully understand the consequences of different ty... | | 2014-01-01 |
| 48 |
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Gur, Yaniv | Assessment of white matter microstructure in stroke patients using NODDI | Diffusion weighted imaging (DWI) is widely used to study changes in white matter following stroke. In various studies employing diffusion tensor imaging (DTI) and high angular resolution diffusion imaging (HARDI) modalities, it has been shown that fractional anisotropy (FA), me... | | 2014-01-01 |
| 49 |
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Gerig, Guido | Changes of MR and DTI appearance in early human brain development | Understanding myelination in early brain development is of clinical importance, as many neurological disorders have their origin in early cerebral organization and maturation. The goal of this work is to study a large neonate database acquired with standard MR imagery to illuminate effects of early ... | | 2010-01-01 |
| 50 |
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Gerig, Guido | Analyzing imaging biomarkers for traumatic brain injury using 4D modeling of longitudinal MRI | Quantitative imaging biomarkers are important for assessment of impact, recovery and treatment efficacy in patients with traumatic brain injury (TBI). To our knowledge, the identification of such biomarkers characterizing disease progress and recovery has been insufficiently explored in TBI due to d... | | 2013-01-01 |
