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 20 of 241 for “"Skull"”.
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Unsupervised skull stripping in MRI
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Trans-skull Ultrasound for Imaging and Therapy
… for imaging. Despite these advancements, the skull remains a major challenge both for therapy and imaging. This work proposes methods for fast, frequency-selective passive reconstruction of the acoustic field through human skull with applications including improved targeting for exploitation …
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Bat Skull Evolution: the Impact of Echolocation
Morphological adaptations of the mammalian skull are influenced by a variety of functional, environmental and behavioural factors. Skulls of echolocating species, such as bats, also face the challenge of optimizing sound emission and propagation. A strong association between bat skull morphology …
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Intensity modulated radiotherapy for skull base meningioma
… nervous tumour (CNS) affecting mostly adults. Skull base meningiomas cause morbidity (and occasionally mortality) by compressing adjacent critical organs, and the aim of treatment is to optimise and preserve CNS function. Radiotherapy is an effective treatment for meningioma, with doses of …
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Fourteen cases of compound fracture of the skull
… several cases of compound fracture of the skull, compound fractures of the leg, scalp wounds, and lacerations arid bruises of various parts of the body. The six cases (Nos. 6 - 11) were operated upon on the 2 6 t h December, 1909. T’he first, case was placed on the table to be shaved and …
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Biomechanical Investigation of Head Kinematics and Skull Stiffness
… cranial motion in the studies from Part I using skull stiffness values from published studies. Chapter 2 explored data collection methodologies used in frontal sled tests. Several data collection methodologies exist for collecting kinematic data, such as Vicon motion analysis, video analysis, and …
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Theatre of the Skull. Rough for Radio II by Samuel Beckett
This B.A. thesis examines Samuel Beckett’s portrayal of the artistic mind and the process of creativity in his radio play “Rough for Radio II”. The play as a piece of performance for radio will be briefly discussed. Then how Beckett highlights four different parts of the artist’s mind, turning each …
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Computational simulation of skull fracture patterns in pediatric subjects using a porcine model
… the head, as comprehensive biomechanical data on skull fracture in infants and children do not currently exist, and frequently the determination regarding cause of injury is based on anecdotal evidence from the medical literature and unsubstantiated eyewitness accounts. The current process may …
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Effect of Football Helmet and Football Helmet/Skull Cap Combination on Core Temperature
… of a football helmet and a football helmet/skull cap combination increases core body temperature in an exercising athlete. Secondary investigative questions considered the effect of football helmet and football helmet/skull cap combination on interior football helmet temperature and distance …
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I. A study of the Hokien and Tamil skull; II. Individual contour tracings
ADDITIONAL PAPERS IN SUPPORT OF THESIS: 1. Variations in the region of teh Foramen Magnum, by Gordon Harrower. Reprinted from the Journal of Anatomy, Vol.LVII, Part 2, January, 1923, 2. Mechanical considerations in the Scapulohumeral articulation, by Gordon Harrower. Reprinted from the Journal of …
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Development and Evolution of the Skull-Neck Boundary: Insights from Amphibian Model Species
… the morphology and development of the skull-neck boundary in lissamphibians. To complete this goal, I tested two hypotheses. First, that the skull-neck boundary and composition of the occiput observed in extant lissamphibians is the result of a secondary reduction compared to their …
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Validation and Evaluation of Cortical and Full Skull Thickness Changes with Age and Sex
… TBI. One important contributor is believed to be skull deformation, and characterizing the skull's thickness and how it changes is an important step toward understanding skull deformation potential and its attribution to TBI.
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Assessing primate skull shape variation in relation to habitat: a 3D geometric morphometric approach
… create accurate 3D digital renderings of primate skull specimens and b) define a reproducible geometric morphometric technique, which could be used as a valid and precise statistical procedure for future studies regarding hominin ecomorphology. This was achieved by pilot testing laser scanning …
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A 2-D Analysis of Strains at the Interface Between the Brain and the Skull
<p>Rapid deformation of brain tissue caused by skull acceleration is one of the most significant causes of traumatic brain injury (TBI). Although the deformation mechanisms within the brain have been revealed by analysis of tagged magnetic resonance images, the mechanical responses at the periphery …
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Investigating the biomechanics of a lizard skull using advanced computer modelling techniques with experimental validation
Lizard skulls vary greatly in shape and construction, and radical changes in skull form during evolution have made this an intriguing subject of research. The mechanics of feeding have surely been affected by this change in skull form, but whether this change in feeding is the driving force behind …
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An evaluation of computer assisted skull re-assembly using hand held and automated laser scanners
Computer assisted skull re-assembly is an alternative to classical manual methods of physical restoration and reconstruction. The technique is reliant on high quality images produced by radiological CT or optical surface laser scans. The accuracy of CAD reassembly and the contribution the …
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Quantifying the Response of Relative Brain/Skull Motion to Rotational Input in the PMHS Head
… was used to record the motion of the brain and skull via radio-opaque markers implanted at specified locations in the brain, and lead markers on the skull. Specimens were perfused to physiologic conditions throughout preparation and testing to maintain the integrity of the brain tissue and …
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The effect of brain-specific VEGF-C deletion on vascular morphology in the brain and skull
Vascular endothelial growth factor C (VEGF-C) promotes mainly lymphangiogenesis, but it can also stimulate angiogenesis by binding to VEGFR3 and VEGFR2 on endothelial cell surface. We studied VEGF-C expression by β-galactosidase staining in VegfcLacZ/+ mice. This revealed Vegfc expression in …
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