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 22 for “"Lumbar vertebrae"”.
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Segmentation of cervical and lumbar vertebrae in x-ray images using active appearance models and extensions
… tailored 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. …
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Computed tomography study of safe implantation corridors in rabbit vertebrae
Objectives: 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 …
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Effect of nutrient intake on pigs treated with porcine somatotropin
… measured at the 10th rib, last rib, last lumbar vertebrae, as well as the P2 site.
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Evolution of the Hominoid Vertebral Column
… Although the ""short backs,"" reflecting reduced lumbar regions, of living hominoids have traditionally been interpreted as homologies and shared derived characters (synapomorphies) of the ape and human clade, recent studies of variation in extant hominoid vertebral formulae have challenged this …
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Ureteroskopijos ir ekstrkorporinės litotripsijos efektyvumo bei rizikos veiksnių palyginimasis tyrimas šalinant akmenis iš viršutinio šlapimtakio trečdalio /
… of the stone at the level of the 3rd lumbar vertebrae is related to its high possibility of migrating to the kidney, so, seeking to completely remove the stone after one operation, it is necessary to prepare a more complex surgical equipment in advance. Study results allow to state …
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Computationally Efficient Finite Element Models of the Lumbar Spine for the Evaluation of Spine Mechanics and Device Performance
<p>Finite Element models of the lumbar spine are commonly used for the study of spine mechanics and device performance, but have limited usefulness in some applications such as clinical and design phase assessments due to long analysis times. In this study a computationally efficient L4-L5 FSU …
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Generalizable Methods for Modeling Lumbar Spine Kinematics
<p>A more complete understanding of lumbar spine kinematics could improve diagnoses and treatment of low back pathologies and may advance the development of biomechanical models. Kinematics describes motion of the five lumbar vertebrae without consideration for the forces that cause the motion. …
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The comparative study of effectiveness and risk factors of ureteroscopy and extracorporeal shock wave lithotripsy in the upper part of ureter /
… of the stone at the level of the 3rd lumbar vertebrae is related to its high possibility of migrating to the kidney. Study results allow to state that, when performing ureteroscopy patient‘s age, gender, ASA degree, the fact whether the stone is in the left or in the right ureter, do …
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Quantification of bone using a 3.0 tesla clinical magnetic resonance scanner
… populations (e.g. Figure 8-26). The MR data from lumbar vertebrae also demonstrated good correlation with DEXA data and some of the measurements were also able to differentiate between the HBM-affected and control populations.The combined results from this thesis demonstrate that both MRI and MRS …
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Experimental and Simulation Based Dynamic Assessment of Flexion and Extension Movements of Torso
… model was built with one thorax and five lumbar vertebrae stacked upon a stationary pelvis. Kinematics driven optimization was used to estimate time-dependent muscle forces. Muscle forces were determined by minimizing the metabolic power while satisfying the equations of motion. Spinal …
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The Effect of Magnification Loupes on Posture During Instrumentation by Dental Hygienists
… head and trunk (occipital pole of head, cervical vertebrae: C5, thoracic vertebrae: T5, lumbar vertebrae: L1) to measure changes in posture. Accelerations in three axes were recorded (anterior/posterior (AP), medial/lateral (ML), vertical (VT)). Mean accelerations of the three axes were used to …
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Computed tomography of the thorax and abdomen of the clinically normal common marmoset (Callithrix jacchus)
… as positioning of kidneys in relationship to lumbar vertebrae) and could either be due to different study population, imply more mobility of kidneys similar to cats, or emphasize that CT might be better for certain aspects of anatomic descriptions than actual anatomy studies, since it is done …
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Inter- and intra-examiner reliability of lumbar spine radiograph analysis by chiropractors and its impact on clinical management
Submitted in partial compliance with the requirements for the Master’s Degree in Technology: Chiropractic, Durban University of Technology, Durban, South Africa, 2017.
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A qualitative and quantitative analysis of the developing human lumbar vertebral column
The human adult lumbar vertebral column plays an important role in loadbearing and weight-transmission between the trunk and the lower limb, while its other functions include acting as a site for haematopoiesis, an area of attachment for soft tissue structures and protection of the spinal cord. …
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Characterizing the amount and variability of intramuscular fat deposition of pork loins using barrows and gilts from two sire lines
… from the 6th rib, 10th rib, last rib and 4th lumbar vertebrae were analyzed for visual color and visual marbling, subjective firmness, extractable lipid (IMF) and moisture content, and Warner-Bratzler shear force (WBSF). Determination of marbling from ultrasound images in this trial was not an …
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The Life History of Damaraland Mole-rats Fukomys damarensis: Growth, Ageing and Behaviour
… is achieved through a lengthening of the lumbar vertebrae when breeding is commenced (Chapter 5). With contrasts in size and shape following the acquisition of the breeding role, this status-related growth pattern shares similarities with growth in naked mole-rats and other social …
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Physical activity and its effect on bone in the short- and long- term perspective.
… were measured with DXA at the total body, lumbar spine and the hip. Bone size and volumetric bone mineral density (vBMD; g/cm3) of the femoral neck and the third lumbar vertebrae (L3) were calculated from the dual energy X-ray absorbtiometry (DXA) scans. A questionnaire previously used in …
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Kinematics of the equine axial skeleton during aqua-treadmill exercise
… on the poll, withers (T4/T5), mid thorax (T13), lumbar vertebrae (L4), tuber sacrale, left and right tuber coxae, and top of the tail (1st coccygeal vertebrae). Data were cut into strides with accelerations double integrated to generate displacement amplitudes, both vertical and mediolateral, for …
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The effect of lumbar spine, sacro-iliac and/or hip joint manipulation on muscle activity and performance in road cycling
Submitted in partial compliance with the requirements for the Master’s Degree in Technology: Chiropractic, Durban University of Technology, Durban, South Africa, 2018.
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