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.
Results
Showing 1 to 20 of 131 for “"vertebrae"”.
-
Lumbosacral transitional vertebrae morphology: a South African population
Lumbosacral transitional vertebrae (LSTV) are defined as congenital anatomical variations, observed unilaterally or bilaterally, in which the transverse process of the last lumbar vertebra exhibits signs of dysplasia evident as increased craniocaudal height, with varying degrees of articulation or …
-
Sexual dimorphism of the thoracic vertebrae in a modern Cretan population: a comparison of the individual vertebrae in terms of accuracy in estimating sex.
… concerned with sexual dimorphism in the human vertebrae in general, yet few are concerned specifically with the thoracic vertebrae. This thesis examines the presence and extent of sexual dimorphism in the thoracic vertebrae of a documented Greek population from the island of Crete, and …
-
Computed tomography study of safe implantation corridors in rabbit vertebrae
… A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: CT imaging of 20 adult New Zealand white rabbits was evaluated using 3-D multiplanar reconstruction, and safe corridors …
-
Lumbosacral transitional vertebrae: classification of variation and association with low back pain
The association of lumbosacral transitional vertebrae (LSTV) and low back pain, commonly referred to as Bertolotti's syndrome (Bertolotti, 1917), has a controversial history. LSTV are caused by the overlap or shift of developmental fields, and result in vertebrae with abnormal morphology. Current …
-
Computational Modeling and Validation of the Deformation and Failure Response of Human Metastatic Vertebrae
… assessment of fracture risk of metastatic vertebrae. In this thesis, we propose a comprehensive computational framework for the modeling and validation of the deformation and failure response of human metastatic vertebrae. First, we develop an image-based pipeline for the generation of …
-
The effect of Zoledronate treatment timing on lumbar and caudal vertebrae in ovariectomized rats
… potent bisphosphonate, on the lumbar and caudal vertebrae in ovariectomized [OVX], female Wistar rats. Methods: Twenty nine rats were divided into four groups according to their treatment: OVX at week 0 (n=5), OVX+earlyZOL (20 jig/kg s.c. week 0, n=8), OVX+late ZOL (20 jlg/kg s.c. week 8, n=7), …
-
Computed tomographic evaluation of safe corridors for pin placement in rabbit thoracolumbar vertebrae and sacrum
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
-
Age, movements, and feeding ecology of northwest Atlantic white sharks estimated from ecogeochemical profiles in vertebrae
… history in difficult to study species. Shark vertebrae are constructed of distinct layers of tissue laid down sequentially over an individual’s lifetime and may preserve a chemical record of environmental exposure. In this thesis, I investigate the ecology of the understudied northwest …
-
Segmentation of cervical and lumbar vertebrae in x-ray images using active appearance models and extensions
… to the segmentation of cervical and lumbar vertebrae in digitized X-ray images. The algorithm employs the Generalized Hough Transform (GHT) to obtain a suitable initialization for two segmentation stages that utilize Active Appearance Models (AAMs) that were proposed by Cootes et al. The …
-
Age, movements, and feeding ecology of northwest Atlantic white sharks estimated from ecogeochemical profiles in vertebrae
… history in difficult to study species. Shark vertebrae are constructed of distinct layers of tissue laid down sequentially over an individual's lifetime and may preserve a chemical record of environmental exposure. In this thesis, I investigate the ecology of the understudied northwest …
-
A Fully-Automated, Deep Learning-Based Framework For Ct-Based Localization, Segmentation, Verification and Planning of Metastatic Vertebrae
… in the spine, and similarities in adjacent vertebrae are associated with wrong level treatments of the spine. In addition, erroneous manual contouring of anatomic structures is a major failure mode in radiotherapy treatment planning.</p> <p>The purpose of this study is to mitigate the …
-
Functional morphology of mammalian sacra and caudal vertebrae : implications for tail loss and positional behaviors in extinct primates
… evaluates the functional morphology of caudal vertebrae among nonprehensile-tailed primates and other mammals that vary in relative tail length, offering additional insight into the anatomy associated with tail loss (N=333). The relationship between trabecular structure in the proximal sacrum …
-
Intervertebral Articulation and the Evolution of Large Body Size in Archosauria
… together and how the structures that articulate vertebrae change throughout the phylogeny (i.e. family tree) of Archosauria. Although major body size trends are well known for archosaurs, less research has focused on skeletal features that are associated with the evolution of large body size in …
-
Identifying a non-invasive measure of bone status in dairy cattle
… fused 3rd and 4th metacarpal bone and of caudal vertebrae 14 and 15 were assessed. The caudal vertebrae and right front metacarpal (sample pairs) were excised from 107 Holstein cull cows following slaughter. Parity, age, and days in milk (DIM) of the donor animal were obtained for 43 pairs of …
-
A Study of Carasaurus' (Dinosaura: Sauropodomorph) Torso and its Biomechanical Implications
… of the articulations between the dorsal vertebrae and the dorsal ribs of the sauropod dinosaur Camarasaurus (Upper Cretaceous, Wyoming or whatever) shows that the dorsal vertebral column has a slight double curve and the torso is more narrow and volumetrically smaller than previously …
-
Longitudinal variation in the axial muscles of snakes
… within individual segments that span several vertebrae. Consequently, muscles that extend anteriorly have a constraint on their length as their origins are located closer to the skull. However, this and other aspects of longitudinal variation in axial muscle morphology are poorly documented …
-
Modular Lorentz force actuators for efficient biomimetic propulsion of Autonomous Underwater Vehicles
… to directly drive tail foil sections, or vertebrae, in an oscillatory motion to provide thrust. The design process was automated to facilitate implementation in different sized vertebrae. A set of prototype actuators was manufactured and tested to evaluate the feasibility of the design. A …
-
Bone Mineral Density Analysis for Evaluation of Cervical Vertebral Maturation
… to describe bone density changes in the cervical vertebrae occurring during the period of adolescent mandibular growth and development.Materials and methods: Cone beam computerized tomography (CBCT) images were obtained from 41 patients before and after orthodontic treatments. Patients were …
Page 1 of 7