Tomographic Model
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Alveolar bone healing in rats: micro-CT, immunohistochemical and molecular analysis
Abstract Alveolar bone healing after upper incisor extraction in rats is a classical model of preclinical studies. The underlying morphometric, cellular and molecular mechanism, however, remains imprecise in a unique study. Objectives The aim of this study was therefore to characterize the alveolar bone healing after upper incisor extraction in rats by mic
J. Appl. Oral Sci.. Publicado em: 18/06/2018
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2. The Search for the Centre of Resistance of a Tooth Using a Finite Element Model and the Continuum Mechanics
Abstract In orthodontics, the CR is defined as the ideal point for the positioning of the bracket. This paper presents numerical analyses of a premolar tooth, which aim at searching the centre of resistance (CR) by applying several external torques. We built the geometry of the tooth by making a tomographic renderisation with the software MIMICS. The numeric
Lat. Am. j. solids struct.. Publicado em: 14/06/2018
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3. Simulating a Multi-Vehicle Traffic Sensing System Based on Radio Tomographic Imaging
Abstract One of the most recently developed wireless technologies is Radio Tomographic Imaging (RTI). RTI employs a wireless sensor network that produces images of the change in the electromagnetic field of a monitored area using Received Signal Strength (RSS) measurements. This allows the tracking of device-free objects such as humans and cars. This paper i
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-12
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4. Skin Doses on the Lens for Temporomandibular Joint Exam in Cone Beam Computed Tomography
ABSTRACT The aim of this study was to evaluate the kerma at the surface of the lens in TMJ CBCT and to derive the equivalent dose. An anthropomorphic phantom of the head and neck manufactured by Radiation Support Devices (model RS-230) was used. The dosimetric measurements were obtained by using fourteen thermoluminescent dosimetry (TLD) dosimeters (LiF: Mg,
Braz. arch. biol. technol.. Publicado em: 2015-12
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5. Desenvolvimento de um modelo computacional para avaliaÃÃes dosimÃtricas em ratos
Rats are commonly used as experimental models in preclinical tests in Nuclear Medicine. Therefore, it is of great importance to accomplish precise absorbed dose estimates in these small animals, for explanation and control of potential radiation toxicity, observed during the tests. In this work, a tomographic model of an adult male Wistar rat was developed s
Publicado em: 2008
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6. Evaluation of dental tipping achieved in orthodontic treatment with self-ligating brackets using computed tomography images / Avaliação das inclinações dentárias obtidas no tratamento ortodôntico com bráquetes autoligados utilizando tomografia computadorizada
This research had the purpose of evaluating the changes in dental tipping of the anterior teeth of patients treated with self-ligating brackets orthodontic appliances, using computed tomography images. It has been selected a 10-patient clinical sample, all of them presenting complete permanent dentition, either a class I, II or III malocclusion and a 4 mm ma
Publicado em: 2008
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7. Modelo experimental de doença pulmonar intersticial fibrosante associado à terapia celular utilizando células mononucleares de medula óssea / Fibrotic interstitial pulmonary disease: experimental model and bone marrow mononuclear cell therapy
Fibrotic Interstitial pulmonary illnesses affect men, women and children, and presents bad prognostic, 3-5 years depending on the diagnostic confirmation, mainly in idiopathic pulmonary fibrosis. Recent studies demonstrate the capacity of the stem cells in differentiating into different cellular lineages and different tissues, as in heart, liver, gastrointes
Publicado em: 2007
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8. A 3D Tomographic Reconstruction Model for Agricultural Samples with Wiener Filtering and Parallel Processing / Um modelo de reconstrução tomográfica 3D para amostras agrícolas com filtragem de Wiener em processamento paralelo
Neste trabalho, é apresentado um novo modelo de reconstrução tridimensional (3D) para amostras agrícolas com filtragem de Wiener em processamento paralelo, o qual é obtido a partir de reconstruções tomográficas bidimensionais (2D). No desenvolvimento, foram modelados algoritmos paralelos de retroprojeção filtrada e reconstrução tridimensional, ba
Publicado em: 2007
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9. Avaliação radiografica da posição condilar em pacientes submetidos a osteotomia Le Fort I para avanço maxilar / Radiographic assement of the condylar position in patients submitted to le Fort I osteotomy to advance the maxilla
It was realized a prospective radiographic study of the angulation and position of the mandibular condyle, by means of submento-vertex radiograph and conventional tomography of the temporomandibular joint (TMJ). For the study, it was selected eleven patients who were referred to the Division of Oral and Maxillofacial Surgery of Piracicaba School of Dentistry
Publicado em: 2005
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10. Voxel-based model construction from colored tomographic images / ConstruÃÃo de simuladores baseados em elementos de volume a partir de imagens tomogrÃficas coloridas
This work presents a new approach in the construction of voxel-based phantoms that was implemented to simplify the segmentation process of organs and tissues reducing the time used in this procedure. The segmentation process is performed by painting tomographic images and attributing a different color for each organ or tissue. A voxel-based head and neck pha
Publicado em: 2002
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11. Segmentação de imagens tomograficas usando contornos deformaveis com segmentos de custo minimo
Tomographic images contain important information about the anatomy (or function) of three-dimensional structures of the human boby. Image segmentation is the operation that "extracts" the structures of interest from the tomographic images for a given aplication. Deformable contours are among the most investigated methods for image segmentation. Two tradition
Publicado em: 2000
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12. An overview of electrical tomographic measurements in pharmaceutical and related application areas
Tomographic measurement techniques offer the opportunity to quantify the degree of homogeneity of particulate suspensions and other multiphase mixtures. Electrical resistance tomography is a relatively simple and inexpensive technique for measuring the distribution of electrical conductivity within multiphase systems. This can provide pertinent information a
Springer-Verlag.