Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Diffusion tensor MRI"”.
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Incorporation of diffusion tensor MRI in non-rigid registration for image-guided neurosurgery
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Quantitative multi-modal analysis of pediatric focal epilepsy
… modalities including magnetic resonance imaging (MRI), diffusion tensor MRI, positron emission tomography (PET), single-photon emission computerized tomography (SPECT) as well as EEG data to build patient-specific head models and to compute prior probability maps of epileptic hotspots for more …
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A biomechanical investigation of the structure--function relationships in the human tongue
… organ. Tongue myoarchitecture was studied with Diffusion Tensor MRI (DTI), which derived the spatial diffusion tensor field in the tongue. Since, diffusivity relates directly to myofiber orientation, this in vivo technique successfully produced a virtual anatomical atlas. In order to relate this …
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A Novel Device for the Treatment of Obstructive Sleep Apnea
… Hypopnea Index (AHI) in healthy volunteers. MRI Imaging on volunteers wearing the device proved the device does enlarge the airway by 60% - 80%. A finite element model of the tongue, soft palate and airway, with muscle fiber direction derived from Diffusion Tensor MRI, is implemented as a …
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MECHANICAL CHARACTERIZATION OF PORCINE AORTA USING MAGNETIC RESONANCE IMAGING
… this goal couples Magnetic Resonance Imaging (MRI) with Finite Element (FE) analysis to define a model of aortic mechanical behaviour. In particular, the aortic fibrous structure was analysed using Diffusion Tensor MRI, the results of which showed that fibres could be tracked in the aortic …
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Intramural mechanics in the human tongue
… strain in the human tongue, a non-invasive MRI tagging technique was used in combination with a fast asymmetric gradient echo imaging pulse sequence (TurboFLASH). This MRI technique discretize tissue into non-linear deforming elements. Individual elements were defined by selectively …
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An Investigation of Cognitive Deficits Related to Surgery for Glioblastoma using a Computerised Assessment Tool
… a tract based spatial statistics study using diffusion tensor MRI brain scans demonstrates that a common anatomical mechanism exists, affecting the same right hemisphere white matter tracts underlying social cognition deficits in participants with glioblastoma as is seen in traumatic brain …
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Heart failure and associated structural and functional remodeling: assessment employing various magnetic resonance imaging methodologies.
Cardiovascular magnetic resonance imaging (MRI), or cardiac MR, is currently considered the "gold" standard for noninvasively characterizing cardiac function and viability, having 3D capabilities and a high spatial and temporal resolution. More recently, the capabilities of MRI have been extended …
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Elucidation of Emergent Regional Mechanisms of Heart Muscle Dysfunction in the Mouse Model of Duchenne Muscular Dystrophy
<p>Cardiac dysfunction is a primary cause of mortality in Duchenne Muscular Dystrophy (DMD), potentially related to elevated cytosolic calcium. However, the regional versus global functional consequences of cellular calcium mishandling have not been defined in the whole heart. Here, we elucidate, …