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2.
Int. arch. otorhinolaryngol. (Impr.) ; 18(supl.2): 123-126, Apr-Jun/2014. graf
Article in English | LILACS | ID: lil-728761

ABSTRACT

Introduction: Computed tomography (CT) is a key component in the evaluation of skull base diseases. With its ability to clearly delineate the osseous anatomy, CT can provide not only important tips to diagnosis but also key information for surgical planning. Objectives: The purpose of this article is to describe some of the main CT imaging features that contribute to the diagnosis of skull base tumors, review recent knowledge related to bony manifestations of these conditions, and summarize recent technological advances in CT that contribute to image quality and improved diagnosis. Data Synthesis Recent advances in CT technology allow fine-detailed evaluation of the bony anatomy using submillimetric sections. Dual-energy CT material decomposition capabilities allow clear separation between contrast material, bone, and soft tissues with many clinical applications in the skull base. Dual-energy technology has also the ability to decrease image degradation from metallic hardwares using some techniques that can result in similar or even decreased radiation to patients. Conclusions: CT is very useful in the evaluation of skull base diseases, and recent technological advances can increase disease conspicuity resulting in improved diagnostic capabilities and enhanced surgical planning...


Subject(s)
Humans , Magnetic Resonance Imaging , Skull Neoplasms/diagnosis , Tomography, Emission-Computed , Review Literature as Topic , Skull Base
3.
Arq. neuropsiquiatr ; 59(2B): 411-416, Jun. 2001. ilus, tab
Article in Portuguese | LILACS | ID: lil-286426

ABSTRACT

As lesöes do sistema nervoso central, resultantes da vulnerabilidade do encéfalo às condiçöes adversas durante a gestaçäo e após o nascimento, representam uma importante causa de morbimortalidade no período neonatal. Este estudo visa analisar a prevalência e os padröes das lesöes neuropatológicas em neomortos do Hospital de Clínicas de Curitiba. Utilizou-se como fonte de dados o Banco de Necropsia da Unidade de Patologia Perinatal e Pediátrica do Hospital de Clínicas da Universidade Federal do Paraná - Curitiba, que registra 5743 necropsias realizadas entre os anos de 1960 e 1995. Foram selecionados 2049 casos correspondentes aos laudos de necropsia dos neomortos, os quais foram classificados segundo a faixa etária e o padräo de lesäo neuropatológica. Caracterizou-se lesäo neuropatológica em 1616 casos (78,87 por cento), observando-se maior prevalência das hemorragias intracranianas (73,39 por cento), malformaçöes congênitas (4,27 por cento) e infecçöes (3,59 por cento). As hemorragias hipóxicas representaram a lesäo neuropatológica mais freqüente entre os neomortos, especialmente entre os prematuros. Houve diferença na prevalência quanto ao gênero apenas nas malformaçöes, que foram mais comuns no sexo feminino


Subject(s)
Humans , Male , Female , Infant, Newborn , Central Nervous System Diseases/epidemiology , Autopsy , Central Nervous System Diseases/congenital , Central Nervous System Infections/epidemiology , Intracranial Hemorrhages/epidemiology , Prevalence , Retrospective Studies
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