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Filters: Date: "2009-01-01" Collection: ir_uspace
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CreatorTitleDescriptionSubjectDate
1 Schmidt, Meic H.Assessment of the reliability of the Enneking and Weinstein-Boriani-Biagini classifications for staging of primary spinal tumors by the spine oncology study groupDespite advances in the treatment of primary spinal tumors in recent years, the with respect to the feasibility of oncologically appropriate surgical treatment and the selection of the optimal surgical approach. These tumors are relatively rare, comprising 11% of all primary musculoskeletal tumors a...2009-01-01
2 Harrison, Reid R.Brain-machine interface, unpluggedIn experiments and even limited human clinical trials, electrode arrays implanted on the brain's surface have given monkeys and humans the ability to move objects with their thoughts. The experiments are proof that brain-computer interfaces could improve the lives of severely paralyzed people. But...Wireless neural implants; Brain-computer interface2009-01-01
3 Gerig, GuidoConstrained data decomposition and regression for analyzing healthy aging from fiber tract diffusion propertiesIt has been shown that brain structures in normal aging undergo significant changes attributed to neurodevelopmental and neurodegeneration processes as a lifelong, dynamic process. Modeling changes in healthy aging will be necessary to explain differences to neurodegenerative patterns observed in m...2009-01-01
4 Gerig, GuidoCortical enhanced tissue segmentation of neonatal brain MR images acquired by a dedicated phased array coilThe acquisition of high quality MR images of neonatal brains is largely hampered by their characteristically small head size and low tissue contrast. As a result, subsequent image processing and analysis, especially for brain tissue segmentation, are often hindered. To overcome this problem, a dedic...2009-01-01
5 Simpson, Jamesina J.Current and future applications of 3-D global earth-ionosphere waveguide models based on the full-vector maxwells equations FDTD methodAdvances in computing technologies in recent decades have provided a means of generating and performing highly sophisticated computational simulations of electromagnetic phenomena. In particular, just after the turn of the 21st century, improvements to computing infrastructures provided for the firs...2009-01-01
6 Gerig, GuidoDiscordance of prenatal and neonatal brain development in twinsBackground: Discordance of birth weight has been observed in twin pairs, though little is known about prenatal and early neonatal discordance of head and brain size, and the role that zygosity and chorionicity play in discordances of early brain development in twins. Aims: To compare prenatal and ne...2009-01-01
7 Regehr, JohnEliminating the call stack to save RAMMost programming languages support a call stack in the programming model and also in the runtime system.We show that for applications targeting low-power embedded microcontrollers (MCUs), RAM usage can be significantly decreased by partially or completely eliminating the runtime callstack. We presen...2009-01-01
8 Furse, Cynthia M.Enabling wireless communication in aircraft using multipe antenna systemsSensor technology is advancing to provide the robust, miniaturized sensors needed for aircraft prognostics health management (PHM). Aircraft maintainers would like to add numerous pressure, temperature, vibration, fuel quantity, moisture/chemical sensors, but a major challenge of retrofitting old ai...2009-01-01
9 Stevens, KennethEnhanced SDC support for relative timing designs2009-01-01
10 Hawkes, KristenEvaluating grandmother effectsWomen who have outlived child-bearing have long been described as post-reproductive. But contributions they make to the survival or fertility of their descendants enhance the reproduction of their genes. Consequently natural selection affects this characteristic stage of human life history. Grandmot...Human life history; Historical demography; Human longevity2009-01-01
11 Mitchell, Joyce A.Evaluating the informatics for integrating biology and the bedside system for clinical researchBackground: Selecting patient cohorts is a critical, iterative, and often time-consuming aspect of studies involving human subjects; informatics tools for helping streamline the process have been identified as important infrastructure components for enabling clinical and translational research. We d...2009-01-01
12 Couldwell, William T.Fenestration of the oculomotor nerve by a duplicated posterior cerebral artery and aneurysmThe authors report a case of a posterior cerebral artery aneurysm arising from an aberrant arterial branch that was found to be splitting the oculomotor nerve. This 63-year-old man presented with headaches, and CT imaging revealed subarachnoid hemorrhage primarily within the basilar cisterns. Formal...2009-01-01
13 Martin, JimFourier series approximations and low pass filtering: facilitating learning of digital signal processing for biomechanics studentsFiltering raw biomechanical data to remove noise is a key first step that must be performed prior to further biomechanical analysis. Raw biomechanical data are usually filtered to remove noise above a specified cutoff frequency, a process known as "low pass filtering". The concept of frequency conte...2009-01-01
14 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
15 Hawkes, KristenMortality and fertility rates in humans and chimpanzees: how within-species variation complicates cross-species comparisonsA grandmother hypothesis may explain why humans evolved greater longevity while continuing to end female fertility at about the same age as do the other great apes. With that grandmother hypothesis in mind, we sought to compare age-specific mortality and fertility rates between humans and chimpanzee...2009-01-01
16 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
17 Regehr, JohnPrecise garbage collection for CMagpie is a source-to-source transformation for C programs that enables precise garbage collection, where precise means that integers are not confused with pointers, and the liveness of a pointer is apparent at the source level. Precise GC is primarily useful for long-running programs and programs t...2009-01-01
18 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
19 Gerig, GuidoSimulation of brain tumors in MR images for evaluation of segmentation efficacy.Obtaining validation data and comparison metrics for segmentation of magnetic resonance images (MRI) are difficult tasks due to the lack of reliable ground truth. This problem is even more evident for images presenting pathology, which can both alter tissue appearance through infiltration and cause ...Brain MRI; Segmentation validation; Tumor simulation; Simulation of tumor infiltration; Diffusion tensor imaging; Ground truth; Gold standard2009-01-01
20 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
21 Regehr, JohnSurviving sensor network software faultsWe describe Neutron, a version of the TinyOS operating system that efficiently recovers from memory safety bugs. Where existing schemes reboot an entire node on an error, Neutron's compiler and runtime extensions divide programs into recovery units and reboot only the faulting unit. The TinyOS kerne...2009-01-01
22 Gerig, GuidoTeasing apart the heterogeneity of autism: Same behavior, different brains in toddlers with fragile X syndrome and autismTo examine brain volumes in substructures associated with the behavioral features of children with FXS compared to children with idiopathic autism and controls. A cross-sectional study of brain substructures was conducted at the first time-point as part of an ongoing longitudinal MRI study of brain ...2009-01-01
23 Gerig, GuidoTemporal and spatial development of axonal maturation and myelination of white matter in the developing brainBACKGROUND AND PURPOSE-Diffusion tensor imaging (DTI) has been widely used to investigate the development of white matter (WM). However, information about this development in healthy children younger than 2 years of age is lacking, and most previous studies have only measured fractional anisotropy (...2009-01-01
24 Couldwell, William T.Use of the h index in neurosurgeryObject. Assessing academic productivity through simple quantification may overlook key information, and the use of statistical enumeration of academic output is growing. The h index, which incorporates both the total number of publications and the citations of those publications, has been recently ...2009-01-01
25 Gerig, GuidoVoxel-wise group analysis of DTIDiffusion tensor MRI (DTI) is now a widely used modality to investigate the fiber tissues in vivo, especially the white matter in brain. An automatic pipeline is described in this paper to conduct a localized voxel-wise multiple-subject group comparison study of DTI. The pipeline consists of 3 steps...2009-01-01
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