Construction of a copper stepwedge with aluminum equivalent mean gray values
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | https://www.revistas.usp.br/jaos/article/view/3814 |
Resumo: | OBJECTIVES: To produce a copper (Cu) stepwedge with aluminum (Al) equivalent mean gray values (MGV). MATERIAL AND METHODS: The thicknesses of Cu steps that were equivalent to those of the Al were formulated using the X-ray attenuation properties of the materials. The Al and fabricated Cu stepwedges were radiographed, but the MGVs of the Cu stepwedge were mismatching to those of the Al. Using a mathematical function to adjust the pixel MGV of Cu stepwedge to those of the Al, new Cu stepwedges were created. In vitro iterations were performed until best approximation to Al was reached. RESULTS: The MGV of the Cu stepwedges fabricated by formularization were different than those of Al (p=0.001). Iteration method led to MGV similar to those of the Al stepwedge (p=0.207). CONCLUSIONS: Construction of a Cu stepwedge according to the basic rules of radiophysic failed to result in a stepwedge with similar radiodensity values to those of Al stepwedge. Further studies may use the formularization method only for prototype Cu wedge production, but consecutive iterations shall be compassed to obtain the best approximation to Al MGV. |
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Journal of applied oral science (Online) |
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Construction of a copper stepwedge with aluminum equivalent mean gray values AluminumCopperRadiography OBJECTIVES: To produce a copper (Cu) stepwedge with aluminum (Al) equivalent mean gray values (MGV). MATERIAL AND METHODS: The thicknesses of Cu steps that were equivalent to those of the Al were formulated using the X-ray attenuation properties of the materials. The Al and fabricated Cu stepwedges were radiographed, but the MGVs of the Cu stepwedge were mismatching to those of the Al. Using a mathematical function to adjust the pixel MGV of Cu stepwedge to those of the Al, new Cu stepwedges were created. In vitro iterations were performed until best approximation to Al was reached. RESULTS: The MGV of the Cu stepwedges fabricated by formularization were different than those of Al (p=0.001). Iteration method led to MGV similar to those of the Al stepwedge (p=0.207). CONCLUSIONS: Construction of a Cu stepwedge according to the basic rules of radiophysic failed to result in a stepwedge with similar radiodensity values to those of Al stepwedge. Further studies may use the formularization method only for prototype Cu wedge production, but consecutive iterations shall be compassed to obtain the best approximation to Al MGV. Universidade de São Paulo. Faculdade de Odontologia de Bauru2010-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/381410.1590/S1678-77572010000400012Journal of Applied Oral Science; Vol. 18 No. 4 (2010); 390-396 Journal of Applied Oral Science; Vol. 18 Núm. 4 (2010); 390-396 Journal of Applied Oral Science; v. 18 n. 4 (2010); 390-396 1678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/3814/4504Copyright (c) 2010 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessDündar, NesrinGüneri, PelinÖnem, ErinçBoyacioğlu, Hayal2012-04-27T12:10:12Zoai:revistas.usp.br:article/3814Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2012-04-27T12:10:12Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
title |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
spellingShingle |
Construction of a copper stepwedge with aluminum equivalent mean gray values Dündar, Nesrin Aluminum Copper Radiography |
title_short |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
title_full |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
title_fullStr |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
title_full_unstemmed |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
title_sort |
Construction of a copper stepwedge with aluminum equivalent mean gray values |
author |
Dündar, Nesrin |
author_facet |
Dündar, Nesrin Güneri, Pelin Önem, Erinç Boyacioğlu, Hayal |
author_role |
author |
author2 |
Güneri, Pelin Önem, Erinç Boyacioğlu, Hayal |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Dündar, Nesrin Güneri, Pelin Önem, Erinç Boyacioğlu, Hayal |
dc.subject.por.fl_str_mv |
Aluminum Copper Radiography |
topic |
Aluminum Copper Radiography |
description |
OBJECTIVES: To produce a copper (Cu) stepwedge with aluminum (Al) equivalent mean gray values (MGV). MATERIAL AND METHODS: The thicknesses of Cu steps that were equivalent to those of the Al were formulated using the X-ray attenuation properties of the materials. The Al and fabricated Cu stepwedges were radiographed, but the MGVs of the Cu stepwedge were mismatching to those of the Al. Using a mathematical function to adjust the pixel MGV of Cu stepwedge to those of the Al, new Cu stepwedges were created. In vitro iterations were performed until best approximation to Al was reached. RESULTS: The MGV of the Cu stepwedges fabricated by formularization were different than those of Al (p=0.001). Iteration method led to MGV similar to those of the Al stepwedge (p=0.207). CONCLUSIONS: Construction of a Cu stepwedge according to the basic rules of radiophysic failed to result in a stepwedge with similar radiodensity values to those of Al stepwedge. Further studies may use the formularization method only for prototype Cu wedge production, but consecutive iterations shall be compassed to obtain the best approximation to Al MGV. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/3814 10.1590/S1678-77572010000400012 |
url |
https://www.revistas.usp.br/jaos/article/view/3814 |
identifier_str_mv |
10.1590/S1678-77572010000400012 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/3814/4504 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2010 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2010 Journal of Applied Oral Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science; Vol. 18 No. 4 (2010); 390-396 Journal of Applied Oral Science; Vol. 18 Núm. 4 (2010); 390-396 Journal of Applied Oral Science; v. 18 n. 4 (2010); 390-396 1678-7765 1678-7757 reponame:Journal of applied oral science (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Journal of applied oral science (Online) |
collection |
Journal of applied oral science (Online) |
repository.name.fl_str_mv |
Journal of applied oral science (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
||jaos@usp.br |
_version_ |
1800221675515543552 |