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CreatorTitleDescriptionSubjectDate
1 Hawkes, KristenAffluent hunters? Some comments in light of the Alyawara caseOur recent analysis (O'Connell and Hawkes in press) of plant food collecting among the Alyawara, a central Australian hunting group, shows that the cost of subsistence is sometimes quite high, far higher than the current conven. tional wisdom regarding hunters would suggest. We infer from available ...1981-01-01
2 Hawkes, KristenKin selection and cultureThis paper argues that while the discriminations organizing human action are cultural, and kinship in anthropology is not equivalent to genetic relatedness, the theory of kin selection developed in evolutionary biology can tell us a great deal about human social organization. Data on garden assistan...1983-01-01
3 Yanowitz, Frank G.Alan E. Lindsay ECG Learning Center in CyberspaceAn interactive ECG tutorial representing an introduction to clinical electrocardiography.Electrocardiography1996-09-01
4 Dennis, Sharon E.; Uijtdehaage, Sebastian; Candler, C.Health Education Assets Library (HEAL)The Health Education Assets Library (HEAL) is a digital library that provides freely accessible digital teaching resources of the highest quality that meet the needs of today's health sciences educators and learners.HEAL; Health Education Assets Library2000
5 Gerig, GuidoAutomatic and robust computation of 3D medial models incorporating object variabilityAbstract. This paper presents a novel processing scheme for the automatic and robust computation of a medial shape model which represents an object population with shape variability. The sensitivity of medial descriptions to object variations and small boundary perturbations are fundamental problems...2003-01-01
6 Gerig, GuidoObject models in multiscale intrinsic coordinates via m-repsObject descriptions used for 3D segmentation by deformable models and for statistical characterization of 3D object classes benefit from having intrinsic correspondences over deformation of the objects or multiple instances in the same object class. These correspondences apply over a variety of spat...2003-01-01
7 Hawkes, KristenThe grandmother effectWhy do women live long past the age of child-bearing? Contrary to common wisdom, this phenomenon is not new, and is not due to support for the elderly. Rather, grannies have a lot to offer their grandchildren.2004-01-01
8 Gerig, GuidoUnbiased atlas formation via large deformations metric mappingThe 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 intrapopulation variability and inter-population differences, to provide voxelwise mapping of functional sites,...Computational anatomy; Brain atlases; Image metric space2005-01-01
9 Gerig, GuidoVessel tortuosity and brain tumor malignancy: a blinded studyRationale-Malignancy provokes regional changes to vessel shape. Characteristic vessel tortuosity abnormalities appear early during tumor development, affect initially healthy vessels, spread beyond the confines of tumor margins, and do not simply mirror tissue perfusion. The ability to detect and qu...Computer; Cancer; Blood vessels; Tortuosity; MRA; Brain tumor2005-01-01
10 Gerig, GuidoHypothesis testing with nonlinear shape modelsWe present a method for two-sample hypothesis testing for statistical shape analysis using nonlinear shape models. Our approach uses a true multivariate permutation test that is invariant to the scale of different model parameters and that explicitly accounts for the dependencies between variables. ...2005-01-01
11 North American Neuro-Ophthalmology Society (NANOS)Neuro-ophthalmology virtual education library (NOVEL)An extensive, accessible collection of high quality digital materials to cover all of neuro-ophthalmology for use by educators and students world wide.Neuro-Ophthalmology; NOVEL; Neuro-Ophthalmology Virtual Education Library2005-08-11
12 Gerig, GuidoUser-guided 3D active contour segmentation of anatomical structures: significantly improved efficiency and reliabilityActive contour segmentation and its robust implementation using level set methods are well-established theoretical approaches that have been studied thoroughly in the image analysis literature. Despite the existence of these powerful segmentation methods, the needs of clinical research continue to b...Computational anatomy; Image segmentation; Caudate nucleus; 3D active contour models; Open source software; Validation; Anatomical objects2006-01-01
13 Gerig, GuidoFiber tract-oriented statistics for quantitative diffusion tensor MRI analysisDiffusion tensor imaging (DTI) has become the major modality to study properties of white matter and the geometry of fiber tracts of the human brain. Clinical studies mostly focus on regional statistics of fractional anisotropy (FA) and mean diffusivity (MD) derived from tensors. Existing analysis t...Diffusion tensor interpolation, Diffusion tensor statistics, DTI analysis, Fiber tract modeling2006-01-01
14 Arlitsch, KenningCollaboration and partnerships: opportunities aboundPowerPoint presentation describing some of the digital collection building partnerships of the University of Utah. Major covered projects include the Utah Digital Newspapers Program, Mountain West Digital Library, Western Waters Digital Library, and the Utah Artists Project, among others.Digital collections; Electronic libraries; Cooperative collection building2006-01-22
15 Gerig, GuidoProbabilistic fiber tracking using particle filteringThis paper presents a novel and fast probabilistic method for white matter fiber tracking from diffusion weighted MRI (DWI). We formulate fiber tracking on a nonlinear state space model which is able to capture both smoothness regularity of fibers and uncertainties of the local fiber orientations du...2007-01-01
16 Gerig, GuidoAsymmetrical ventricular enlargement in Parkinsons DiseaseBackground-A recent case report suggested the presence of asymmetrical lateral ventricular enlargement associated with motor asymmetry in Parkinson's disease (PD). The current study explored these associations further. Methods-Magnetic resonance imaging (3T) scans were obtained on 17 PD and 15 healt...Structural magnetic resonance imaging; Semi-automatic segmentation; Lateral ventricular volume; Motor asymmetry; Parkinson's disease2007-01-01
17 Gerig, GuidoQuantification of measurement error in DTI: theoretical predictions and validationThe presence of Rician noise in magnetic resonance imaging (MRI) introduces systematic errors in diffusion tensor imaging (DTI) measurements. This paper evaluates gradient direction schemes and tensor estimation routines to determine how to achieve the maximum accuracy and precision of tensor derive...2007-01-01
18 Gerig, GuidoReduced interhemispheric connectivity in schizophrenia- tractography based segmentation of the corpus callosumBackground-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 of the corpus callosum white matter tracts, thereby providing information concer...2008-01-01
19 Gerig, GuidoBrain lesion segmentation through physical model estimationSegmentations of brain lesions from Magnetic Resonance (MR) images is crucial for quantitative analysis of lesion populations in neuroimaging of neurological disorders. We propose a new method for segmenting lesions in brain MRI by inferring the underlying physical models for pathology. We use the r...Magnetic resonance (MR) images; Neurological disorders; Diffusion tensor imaging (DTI).2008-01-01
20 Gerig, GuidoEvaluation of brain MRI alignment with the Robust Hausdorff Distance MeasuresWe present a novel automated method for assessment of image alignment, applied to non-rigid registration of brain Magnetic Resonance Imaging data (MRI) for image-guided neurosurgery. We propose a number of robust modifications to the Hausdorff distance (HD) metric, and apply it to the edges recovere...Magnetic resonance imaging (MRI)2008-01-01
21 Frey, Lewis J.Enhancing caBIG™ workflow for multi-tier distributionIntroduction caBIG™ Integration caBIG™ provides a GRID based application environment with data abstraction and vocabulary services, workflow management and a security framework. Sensor Abstraction Interface It is proposed to provide a sensor abstraction interface, using caDSR, enabling caBIG...caBIG; Sensor abstraction interface; Multi-tier distribution; Trapeze Interactive Poster2009
22 Gerig, GuidoProbabilistic white matter fiber tracking using, particle filtering and von mises-fisher samplingStandard particle filtering technique have previously been applied to the problem of fiber tracking by Brun et al. (2002) and Bjornemo et al. (2002). However, these previous attempts have not utilised the full power of the technique, and as a result the fiber paths were tracked in a goal directed wa...Diffusion tensor MRI; Tractography; Probabilistic fiber tracking; Particle filtering; von Mises-Fisher sampling2009-01-01
23 Gerig, GuidoParticle based shape regression of open surfaces with applications to developmental neuroimagingShape regression promises to be an important tool to study the relationship between anatomy and underlying clinical or biological parameters, such as age. In this paper we propose a new method to building shape models that incorporates regression analysis in the process of optimizing correspondences...2009-01-01
24 Gerig, GuidoGroup analysis of DTI fiber tract statistics with application to neurodevelopmentDiffusion tensor imaging (DTI) provides a unique source of information about the underlying tissue structure of brain white matter in vivo including both the geometry of major fiber bundles as well as quantitative information about tissue properties represented by derived tensor measures. This paper...Diffusion tensor imaging; Registration; Tract modeling; Neurodevelopment; Statistical modeling2009-01-01
25 Gerig, GuidoSpatiotemporal atlas estimation for developmental delay detection in longitudinal datasetsWe propose a new methodology to analyze the anatomical variability of a set of longitudinal data (population scanned at several ages). This method accounts not only for the usual 3D anatomical variability (geometry of structures), but also for possible changes in the dynamics of evolution of the str...2009-01-01
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