Volumetric Assessment
Mostrando 13-24 de 27 artigos, teses e dissertações.
-
13. Tomographic analysis of the apical third of curved canals after endodontic treatment with different automated systems / Análise tomográfica do terço apical de canais curvos após preparo endodôntico com diferentes sistemas automatizados
This study aimed to evaluate through Beam Computed Tomography Volumetric cone (Cone-Beam), transport and the ability to centralize various automated systems. The mesiobuccal roots of maxillary first molars were divided into four groups (n=10) according to the automated systems used: GI - reciprocating with K-file Flexofile, GII - reciprocating with file NiTi
Publicado em: 2009
-
14. Comparative analysis between mandibular positions in centric relation and maximum intercuspation by cone beam computed tomography (CONE-BEAM)
This research consisted of a quantitative assessment, and aimed to measure the possible discrepancies between the maxillomandibular positions for centric relation (CR) and maximum intercuspation (MI), using computed tomography volumetric cone beam (cone beam method). The sample of the study consisted of 10 asymptomatic young adult patients divided into two t
Journal of Applied Oral Science. Publicado em: 2009
-
15. PRIMARY AND HARMONIZATION OF THE REFERENCE VALUES: INTERNATIONAL EXPERIENCE AS CONTRIBUTION TO A BRAZILIAN SYSTEM FOR MEASURING THE FLOW OF NATURAL GAS / PADRONIZAÇÃO PRIMÁRIA E HARMONIZAÇÃO DE VALORES DE REFERÊNCIA: CONTRIBUIÇÃO DA EXPERIÊNCIA INTERNACIONAL À FORMULAÇÃO DE UM SISTEMA BRASILEIRO PARA MEDIÇÃO DE VAZÃO DE GÁS NATURAL
The objective of this Master dissertation in metrology is to contribute for structuring the Brazilian traceability chain for flow measurement of natural gas at high pressure, based on successful experiences of national metrology laboratories of highly industrialized countries. The study takes into account the primary standardization and harmonization of refe
Publicado em: 2008
-
16. Representação e visualização volumétrica de dados espaciais para avaliação de solos / Volumetric representation and visualization of spatial data for soils assessment
A presente tese trata da representação e da visualização volumétrica de dados espaciais, através das quais novas possibilidades para visualizar tridimensionalmente as propriedades dos solos são apresentadas. O uso de volumes nos processos avaliativos dos solos permite ver e explorar a estrutura complexa do fenômeno como um corpo contínuo no espaço,
Publicado em: 2007
-
17. The importance of accurate anatomic assessment for the volumetric analysis of the amygdala
There is a wide range of values reported in volumetric studies of the amygdala. The use of single plane thick magnetic resonance imaging (MRI) may prevent the correct visualization of anatomic landmarks and yield imprecise results. To assess whether there is a difference between volumetric analysis of the amygdala performed with single plane MRI 3-mm slices
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-03
-
18. Avaliação do uso da banda de rodagem de pneus inservíveis triturada como suporte ao desenvolvimento de biofilmes em um reator anaeróbio de leito expansível / Granulated tread of scrap tires as support for the development of biofilms in an expanded bed anaerobic reactor
The present research had as objective the assessment of granulated tread of scrap tires (GTST) as support for the development of biofilms in an expanded bed anaerobic reactor (EBAR), in full scale, with a total volume of 32m3, employed for wastewater treatment. The use of this material as support was presented as an innovating proposal, with a high applicati
Publicado em: 2005
-
19. Gerenciamento de residuos hospitalares e avaliação da secagem como metodo de redução de volume e grau de periculosidade
In this work infectious healthcare waste (IHW) produced in a blood bank facility was investigated. Aspects of IHW such as production, internal handling, physical and microbiological characterization as well as evaluation of a drying process for volume and microbiological load reduction were studied, using surrogate IHW and indicator microorganism for effecti
Publicado em: 2003
-
20. Quantitative assessment of early brain damage in a rat model of focal cerebral ischaemia.
A method for the volumetric assessment of early cerebral infarction, together with its statistical and biological validation, is described. In halothane anaesthetised rats the stem of the right middle cerebral artery was occluded and 3 hours later (with full monitoring of respiratory and cardiovascular status) the animals were killed by perfusion fixation. I
-
21. Bony orbital morphology in neurofibromatosis type 1 (NF1).
We retrospectively compared patients with NF1 with and without optic pathway gliomas (OPG) to determine the incidence and range of orbital developmental abnormalities and compared the incidence of OPG in African-Americans and whites. From cranial MR scans, we manually measured 14 orbital dimensions, compared them to published standards of Waitzman et al, cal
-
22. Atrophy of medial temporal lobes on MRI in "probable" Alzheimer's disease and normal ageing: diagnostic value and neuropsychological correlates.
Magnetic resonance imaging (MRI) has shown a great reduction in medial temporal lobe and hippocampal volume of patients with Alzheimer's disease as compared to controls. Quantitative volumetric measurements are not yet available for routine clinical use. We investigated whether visual assessment of medial temporal lobe atrophy (MTA) on plain MRI films could
-
23. Role of spiral volumetric computed tomographic scanning in the assessment of patients with clinical suspicion of pulmonary embolism and an abnormal ventilation/perfusion lung scan.
BACKGROUND: A study was carried out to evaluate the potential place of spiral volumetric computed tomography (SVCT) in the diagnostic strategy for pulmonary embolism. METHODS: In a prospective study 249 patients with clinical suspicion of pulmonary embolism were evaluated with various imaging techniques. In all patients a ventilation/perfusion (V/Q) scan was
-
24. Memory disorders in probable Alzheimer's disease: the role of hippocampal atrophy as shown with MRI.
Magnetic resonance based volumetric measures of hippocampal formation, amygdala (A), caudate nucleus (CN), normalised for total intracranial volume (TIV), were analysed in relation to measures of cognitive deterioration and specific features of memory functions in 18 patients with probable Alzheimer's disease. Neuropsychological examination included the mini