Digital X Rays
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Estudo da identificação humana por meio da imaginologia dos seios frontais.
The aim of this study was to verify the applicability of parameters for human identification using the frontal sinuses, used by Tatlisumak et al. (2007), using axial and coronal reconstructions of CBCT and extraoral radiographs. From 58 dry disjointed skulls existing in the Management of Legal Medicine of Paraiba (PB-GEMOL) and University Center of Joao Pess
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/03/2012
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2. Segmentação das áreas isquêmicas no acidente vascular cerebral utilizando imagens de tomografia computadorizada de perfusão / Segmentation of ischemic areas in stroke using perfusion computed tomography images
The techniques of digital image processing have been widely applied to medical imaging. One of the benefits brought about by these tools is to provide measurements of parameters that are difficult to estimate and likely to bias the physician. This study aimed to develop semi-automatic software of segmentation of the ischemic areas, core and penumbra in strok
Publicado em: 2011
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3. Integrando sistemas de auxílio ao diagnóstico no sistema gerenciador de imagens médicas / Integrating computer-aided diagnosis systems into the picture archiving and communication system
The technology evolution seen in the last years provided large adoption of digital image acquisition equipments, such as: X-rays, computed tomography, magnetic resonance and ultrasound. The use of these devices in daily hospital routine generates an expressive image data volume which demands intelligent solutions for image storage, distribution and visualiza
Publicado em: 2010
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4. Assessment of proximal caries lesions through microtomography, cone beam CT and digital radiographs / Avaliação de cáries proximais por meio da microtomografia, tomografia Cone Beam e radiografias digitais
Dental caries is still a great challenge to dentists, manly in proximal surfaces due to its difficult diagnosis. Many types of equipment have been designed to minimize this problem, specially aiming early caries detection. Among all, one of the most used by clinicians is the interproximal radiograph. The International Caries Assessment System (ICDAS) is a cl
Publicado em: 2009
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5. Protocolo de fotogrametria computadorizada na quantificacao angular da escoliose
The scoliosis is a three-dimensional deformation of the spine. It is a serious disease that can compromise vital organs like heart and lungs, in addition to influence the aesthetic and quality of life. His progression is generally associated with growth peak, getting in that case, the name of the adolescent idiopathic scoliosis (AIS). Thus, the pubertal peri
Publicado em: 2009
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6. Estudo comparativo de tres sistemas digitais sem cabo no diagnostico de caries proximais / Comparative study of three wireless digital systems for approximal caries diagnosis
O objetivo, nesse trabalho, foi comparar, de forma objetiva e subjetiva, dois sistemas digitais de placa de armazenamento de fósforo (Digora Optime® e DenOptix®), com o sistema CDR Wireless®, utilizando o filme radiográfico como método radiográfico de referência. Para a análise objetiva, foram obtidas imagens radiográficas de uma escala de densidad
Publicado em: 2007
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7. Filmes finos de iodeto de chumbo como detector de raios-X para imagens médicas / Lead Iodide Thin Films as X-ray detectors for Medical Imaging
In the last few years, great interest has been focused to high atomic number and wide band gap semiconductor materials for applications in room temperature ionizing radiation detection using the direct detection method. Some materials such as PbI2, HgI2, TlBr, CdTe and CdZnTe are good photoconductors and can be used at room temperature. As a good candidate,
Publicado em: 2007
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8. Thin films of lead iodide (PbI2) produced by spray pyrolysis / Filmes finos de iodeto de chumbo (PbI2)produzidos por spray pyrolysis
Researchers in the whole world search alternative methods that minimize the time of deposition of thin films of promising semiconductor candidates for medical applications, such as X-rays detectors for digital radiography. Lead iodide (PbI2) has been among those as a good candidate for the fabrication of room temperature detectors. Other authors have fabrica
Publicado em: 2003
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9. Desenvolvimento de metodos para avaliação de processos de filtração por meio de simulação por meio de simulação numerica e tomografia de raios-x / Development of methods for evaluation of filtration process through numerical simulation and x-ray tomography
The development of methods for analysis of filters and filtration process, using X-ray computerized tomography, digital image processing and numerical simulation, was the objective of this work. Tests conventionally used by filter manufacturers are made through the measurement ofparameters, such as flow and pressure, at upstream and downstream ofthe filter.
Publicado em: 2001
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10. Tomografia computadorizada de raios-X como tecnica de ensaios não destrutivos de materiais
X-ray computed tomography (XCT), originally developed for medical purposes is becoming increasingly applied to several applications where it is necessary the interpretation of the internal structure of an object nondestructively. The present work shows the application of this technique to nondestructive testing using materiaIs and components of different den
Publicado em: 1997
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11. Viabilidade da utilização da liga Sn - Ni65 - 35 eletrodepositada em contatos eletricos
The possibility of tin-nickel alloy coating application in electric contacts used in low voltage-Iow current through the study of its properties is presented. The samples were prepared with a commercial bath and the proportion of the elements in the alloy were 65% of tin and 35% of nickel in weight. The alloy composition and structure were analised by X Rays
Publicado em: 1995
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12. Estudo eletromanometrico do esfincter esofagico superior e corpo do esofago apos distensão intraluminar em normais e chagasicos
The fisiologic studies and analysis of upper esophageal sphincter (UES) have progressed slowly during the last years. Perhaps, this can be explained by its complex working mecanism that determines difficulties in performing these studies. It is known that UES constitutes a barrier to prevent reflux of esophageal contents to the tracheobrcnchial tree, however
Publicado em: 1989