Image quality evaluation of chest for computed radiography
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/978-3-642-29305-4_606 http://hdl.handle.net/11449/75124 |
Resumo: | 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. |
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Image quality evaluation of chest for computed radiographyComputed RadiographyDetective Quantum EfficiencyModulation Transfer FunctionNoise Power SpectrumVisual Grading AssessmentsAbsorption and scatteringsAnthropomorphic phantomsComputed radiographyDetective quantum efficiencyImage quality evaluationNoise power spectrumSubjective evaluationsVisual gradingBiomedical engineeringImage qualityIonizing radiationMATLABModulationOptical transfer functionOptimizationPhysicsPower spectrumRadiographyRadiologyQuality controlThe 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.Instituto de Biociências de Botucatu Departamento de Física e Biofísica UNESP, BotucatuFaculdade de Medicina de Botucatu Departamento de Doenças Tropicais e Diagnóstico Por Imagem UNESP, BotucatuCentro Brasileiro de Pesquisas Físicas CBPF, Rio de JaneiroInstituto de Biociências de Botucatu Departamento de Física e Biofísica UNESP, BotucatuFaculdade de Medicina de Botucatu Departamento de Doenças Tropicais e Diagnóstico Por Imagem UNESP, BotucatuUniversidade Estadual Paulista (Unesp)Centro Brasileiro de Pesquisas Físicas (CBPF)Velo, A. F. [UNESP]Miranda, Diana Rodrigues de Pina [UNESP]Duarte, S. B.Alvarez, M. [UNESP]Oliveira, M. [UNESP]Ribeiro, Sergio Marrone [UNESP]Miranda, J. R. [UNESP]2014-05-27T11:28:55Z2014-05-27T11:28:55Z2013-04-16info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject2308-2311http://dx.doi.org/10.1007/978-3-642-29305-4_606IFMBE Proceedings, v. 39 IFMBE, p. 2308-2311.1680-0737http://hdl.handle.net/11449/7512410.1007/978-3-642-29305-4_6062-s2.0-84876034038Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIFMBE Proceedings0,143info:eu-repo/semantics/openAccess2024-08-15T15:23:39Zoai:repositorio.unesp.br:11449/75124Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-15T15:23:39Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Image quality evaluation of chest for computed radiography |
title |
Image quality evaluation of chest for computed radiography |
spellingShingle |
Image quality evaluation of chest for computed radiography Velo, A. F. [UNESP] Computed Radiography Detective Quantum Efficiency Modulation Transfer Function Noise Power Spectrum Visual Grading Assessments Absorption and scatterings Anthropomorphic phantoms Computed radiography Detective quantum efficiency Image quality evaluation Noise power spectrum Subjective evaluations Visual grading Biomedical engineering Image quality Ionizing radiation MATLAB Modulation Optical transfer function Optimization Physics Power spectrum Radiography Radiology Quality control |
title_short |
Image quality evaluation of chest for computed radiography |
title_full |
Image quality evaluation of chest for computed radiography |
title_fullStr |
Image quality evaluation of chest for computed radiography |
title_full_unstemmed |
Image quality evaluation of chest for computed radiography |
title_sort |
Image quality evaluation of chest for computed radiography |
author |
Velo, A. F. [UNESP] |
author_facet |
Velo, A. F. [UNESP] Miranda, Diana Rodrigues de Pina [UNESP] Duarte, S. B. Alvarez, M. [UNESP] Oliveira, M. [UNESP] Ribeiro, Sergio Marrone [UNESP] Miranda, J. R. [UNESP] |
author_role |
author |
author2 |
Miranda, Diana Rodrigues de Pina [UNESP] Duarte, S. B. Alvarez, M. [UNESP] Oliveira, M. [UNESP] Ribeiro, Sergio Marrone [UNESP] Miranda, J. R. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Centro Brasileiro de Pesquisas Físicas (CBPF) |
dc.contributor.author.fl_str_mv |
Velo, A. F. [UNESP] Miranda, Diana Rodrigues de Pina [UNESP] Duarte, S. B. Alvarez, M. [UNESP] Oliveira, M. [UNESP] Ribeiro, Sergio Marrone [UNESP] Miranda, J. R. [UNESP] |
dc.subject.por.fl_str_mv |
Computed Radiography Detective Quantum Efficiency Modulation Transfer Function Noise Power Spectrum Visual Grading Assessments Absorption and scatterings Anthropomorphic phantoms Computed radiography Detective quantum efficiency Image quality evaluation Noise power spectrum Subjective evaluations Visual grading Biomedical engineering Image quality Ionizing radiation MATLAB Modulation Optical transfer function Optimization Physics Power spectrum Radiography Radiology Quality control |
topic |
Computed Radiography Detective Quantum Efficiency Modulation Transfer Function Noise Power Spectrum Visual Grading Assessments Absorption and scatterings Anthropomorphic phantoms Computed radiography Detective quantum efficiency Image quality evaluation Noise power spectrum Subjective evaluations Visual grading Biomedical engineering Image quality Ionizing radiation MATLAB Modulation Optical transfer function Optimization Physics Power spectrum Radiography Radiology Quality control |
description |
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. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-16 2014-05-27T11:28:55Z 2014-05-27T11:28:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/978-3-642-29305-4_606 IFMBE Proceedings, v. 39 IFMBE, p. 2308-2311. 1680-0737 http://hdl.handle.net/11449/75124 10.1007/978-3-642-29305-4_606 2-s2.0-84876034038 |
url |
http://dx.doi.org/10.1007/978-3-642-29305-4_606 http://hdl.handle.net/11449/75124 |
identifier_str_mv |
IFMBE Proceedings, v. 39 IFMBE, p. 2308-2311. 1680-0737 10.1007/978-3-642-29305-4_606 2-s2.0-84876034038 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
IFMBE Proceedings 0,143 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2308-2311 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128161057079296 |