Tomograph
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. The effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of optic disk topography in patients with diabetic retinopathy
RESUMO Objetivo: Determinar o efeito da panfotocoagulação retiniana nos parâmetros topográficos do disco óptico em pacientes não glaucomatosos com retinopatia diabética proliferativa. Métodos: Este é um estudo observacional prospectivo e unicêntrico. Trinta e oito olhos de 26 pacientes diabéticos foram submetidos à panfotocoagulação retiniana
Arq. Bras. Oftalmol.. Publicado em: 29/04/2019
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2. Location and classification of Canalis sinuosus for cone beam computed tomography: avoiding misdiagnosis
Abstract The aim of this study was to assess the presence, location and, multiplanar distance of the canalis sinuosus (CS) between the incisive foramen and the anterior maxillary alveolar ridge using cone beam computed tomography (CBCT). Therefore, 500 CBCT maxillary images obtained from male and female patients aged 20 to 80 years were selected to assist in
Braz. oral res.. Publicado em: 26/04/2016
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3. Citologia de impressão e microscopia confocal in vivo em córneas com deficiência total das células-tronco do limbo
OBJETIVOS: Descrever as alterações corneais observadas na microscopia confocal in vivo e relacioná-las aos achados da citologia de impressão em pacientes com deficiência total das células-tronco do limbo. MÉTODOS: Série de casos prospectiva incluindo 13 olhos (8 pacientes) com deficiência total das células-tronco do limbo. A deficiência límbica f
Arq. Bras. Oftalmol.. Publicado em: 2013-10
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4. CARACTERIZAÇÃO DE DISPOSITIVOS ELETRÔNICOS PARA DOSIMETRIA EM TOMOGRAFIA COMPUTADORIZADA. / CHARACTERIZATION OF ELECTRONIC DEVICES FOR DOSIMETRY IN COMPUTED TOMOGRAPHY.
Computed tomography (CT) is an examination of high diagnostic capability that delivers high doses of radiation compared with other diagnostic radiological examinations. The current CT dosimetry is mainly made by using a 100 mm long ionization chamber. However, it was verified that this extension, which is intended to collect all scattered radiation of the si
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2012
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5. Desenvolvimento de sistema eletrônico para tomografia de indução magnética / Electronic system development for magnetic induction tomography
Magnetic induction tomography is a contactless conductivity imaging technique. This technique uses a magnetic field generator (usually a coil) to induce Eddy currents in the target object and several magnetic sensors (usually coils as well) that capture the magnetic field generated by these induced currents. The measurements obtained by these sensors can be
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2011
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6. Valor preditivo da topografia de disco óptico para o desenvolvimento de glaucoma / Predictive value of optic disc topography for the development of glaucoma
Purpose: To evaluate the ability of baseline confocal scanning laser ophthalmoscopy, using the Heidelberg Retina Tomograph (HRT), in predicting the development of progression in patients suspected of having glaucoma. In addition, the study also aimed to compare the predictive abilities of the glaucoma probability score (GPS) with those of the Moorfields regr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2011
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7. Fatores associados com a variabilidade das medidas do Heidelberg Retina Tomograph III em pacientes com glaucoma recém-diagnosticados
OBJETIVO: Determinar os fatores associados à variabilidade (teste-reteste) das medidas topográficas da cabeça do nervo óptico (CNO) utilizando a oftalmoscopia confocal de varredura a laser (CSLO) em pacientes com glaucoma recém-diagnosticados. MÉTODOS: Neste estudo, pacientes com glaucoma primário de ângulo aberto recém-diagnosticados foram prospect
Arquivos Brasileiros de Oftalmologia. Publicado em: 2010-08
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8. Tomografia computadorizada de feixe cônico na odontologia de cães e gatos / CONE BEAM COMPUTED TOMOGRAPHY IN VETERINARY DENTISTRY: DESCRIPTION AND STANDARTIZATION OF THE TECHNIQUE
Eleven dogs and four cats with buccodental alterations, treated in the Centro Veterinário do Gama, in Brasilia, DF, Brazil, were submitted to cone beam computed tomography. The exams were carried out in a i-CAT tomograph, using for the images acquisition six centimeters height, 40 seconds time, 0,2 voxel, 120 kilovolts (kV) and 46,72 milliampéres per secon
Publicado em: 2009
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9. 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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10. Development of a computacional model for calculations of absorved dose to organs and tissues of the human body in situations of accidental exposures / Desenvolvimento de um modelo computacional para cÃlculos de dose absorvida em ÃrgÃos e tecidos do corpo humano nas situaÃÃes de exposiÃÃes acidentais
Exposure to a radiation field may be of medical, environmental, occupational or accidental nature, but in all cases the main objective is the determination of the whole body absorbed dose or the distribution of absorbed dose to specific organs and tissues. In recent years, estimates of the radiation absorbed dose in the human body have become more accurate d
Publicado em: 2006
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11. "Tomografia computadorizada, atenuação de raios gama e análise micromorfológica na avaliação de alterações na estrutura e retenção de água pelo solo" / Computed tomography, gamma-ray attenuation, and micromorphologic analysis to evaluate changes on soil structure and water retention
Soil structure is related to the arrangement of soil particles, aggregates, and pores, which makes part of this porous media. The influence of structure on soil physical phenomena ranges from macro to microscope scale. Structure changes in microscope scale are important because affect the soil particle arrangement and, consequently, the pores distribution. S
Publicado em: 2006
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12. Development and applications of three-dimensional gamma ray tomography system using ray casting volume rendering techniques
Computed Tomography (CT) has made possible visualization of physical structures in the interior of an object in their real relative spatial position and orientation. Another important contribution of CT is to greatly improve abilities to distinguish regions with different gamma ray transmittance and to separate over-lying structures. The mathematical problem
Brazilian Journal of Physics. Publicado em: 2005-09