Image quality evaluation of chest for computed radiography

The daily-to-day of medical practice is marked by a constant search for an accurate diagnosis and therapeutic assessment. For this purpose the doctor serves up a wide variety of imaging techniques, however, the methods using ionizing radiation still the most widely used because it is considered cheaper and above all very efficient when used with control and quality. The optimization of the risk-benefit ratio is considered a major breakthrough in relation to conventional radiology, though this is not the reality of computing and digital radiology, where Brazil has not established standards and protocols for this purpose. This work aims to optimize computational chest radiographs (anterior-posterior projection-AP). To achieve this objective were used a homogeneous phantoms that simulate the characteristics of absorption and scattering of radiation close to the chest of a patient standard. Another factor studied was the subjective evaluation of image quality, carried out by visual grading assessment (VGA) by specialists in radiology, using an anthropomorphic phantom to identify the best image for a particular pathology (fracture or pneumonia). Quantifying the corresponding images indicated by the radiologist was performed from the quantification of physical parameters (Detective Quantum Efficiency - DQE, Modulation Transfer Function - MTF and Noise Power Spectrum - NPS) using the software MatLab®. © 2013 Springer-Verlag.

Na trilha da narrativa policial brasileira: Luiz Lopes Coelho e Rubem Fonseca

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ignácio de Loyola Brandão: memória e literatura, a escrita como exercício da indignação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Saramago, Braff e seus personagens duplos: uma análise comparativa

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Balada da praia dos cães: o desafiante romance policial de Cardoso Pires

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Diálogos contemporâneos com Eça de Queiroz e Fradique Mendes

Pós-graduação em Letras - FCLAS

De Holmes a Poirot: relações entre literatura e história na narrativa policial britânica

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

As memórias de crónica de una muerte anunciada

Pós-graduação em Estudos Literários - FCLAR

Construção de fantomas homogêneos pediátricos de crãnio e tórax para otimização de imagens em radiografia computadorizada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A dialética da malandragem revisitada em O Xangô de Baker Street

Using the concept of influence, well explored by Sandra Nitrini (2000), the purpose of this study is to verify the characterization of the main characters of O Xangô de Baker Street (1995) and Macunaíma, o herói sem nenhum caráter (1928) – Sherlock Holmes and Macunaíma – as rogues in their novels, heirs to the Spanish picaresque, a genre that has taken on new meaning in Brazilian literature, as pointed out since the 1960s by Antonio Candido in his famous essay “Dialética da malandragem” (2010). With these theories, we analyze the composition of the tricksters, whose starting point is the question facing the country, the Brazilian. Although the distances in time and style of separating the protagonists created by Jô Soares and Mário de Andrade, we have noticed the interesting procedure of re-creation of the renowned English detective created by Arthur Conan Doyle and the reinterpretation of aspects of Brazilian folklore a convergence of interests with regard to representation of the national character.

Literatura, história e indústria cultural em o O Xangô de Baker Street

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

O romance policial contemporâneo pelos caminhos da paródia: uma vertente metalinguística

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Construction of pediatric homogeneous phantoms for optimization of chest and skull radiographs

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)