Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | MedicalExpress (São Paulo. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2358-04292016000300003 |
Resumo: | OBJECTIVE: To examine whether the Hounsfield Unit value predicts calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy. METHOD: 119 patients who underwent percutaneous nephrolithotomy were prospectively evaluated between February 2012 and August 2014. Using thin cuts, the highest single-energy computed tomography attenuation value within a pixel was measured for each stone. Data regarding age and gender were assessed before surgery. The extracted stones were analyzed using infrared spectrophotometry. RESULTS: By receiver operating characteristics analysis, a cutoff value of 1548 Hounsfield Unit and an age of 42.5 years were used to determine the likelihood of a stone being composed of calcium oxalate monohydrate. A higher Hounsfield Unit value and increased age augmented the chances of a stone being composed of calcium oxalate monohydrate. In general, females had a greater likelihood of harboring calcium oxalate monohydrate stones than males. CONCLUSION: The maximum Hounsfield Unit value, as determined by unenhanced single-energy computed tomography in association with gender, predicts the presence of calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy. |
id |
METC-1_2799796fea492b4228c792909ab544de |
---|---|
oai_identifier_str |
oai:scielo:S2358-04292016000300003 |
network_acronym_str |
METC-1 |
network_name_str |
MedicalExpress (São Paulo. Online) |
repository_id_str |
|
spelling |
Correlation between Hounsfield Unit Value and Stone Composition in NephrolithiasisUrinary CalculiLithotripsyTomographyHounsfield Unit OBJECTIVE: To examine whether the Hounsfield Unit value predicts calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy. METHOD: 119 patients who underwent percutaneous nephrolithotomy were prospectively evaluated between February 2012 and August 2014. Using thin cuts, the highest single-energy computed tomography attenuation value within a pixel was measured for each stone. Data regarding age and gender were assessed before surgery. The extracted stones were analyzed using infrared spectrophotometry. RESULTS: By receiver operating characteristics analysis, a cutoff value of 1548 Hounsfield Unit and an age of 42.5 years were used to determine the likelihood of a stone being composed of calcium oxalate monohydrate. A higher Hounsfield Unit value and increased age augmented the chances of a stone being composed of calcium oxalate monohydrate. In general, females had a greater likelihood of harboring calcium oxalate monohydrate stones than males. CONCLUSION: The maximum Hounsfield Unit value, as determined by unenhanced single-energy computed tomography in association with gender, predicts the presence of calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy.Mavera Edições Técnicas e Científicas Ltda2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2358-04292016000300003MedicalExpress v.3 n.3 2016reponame:MedicalExpress (São Paulo. Online)instname:Mavera Edições Científicas e Técnicas Ltda-MEinstacron:METC10.5935/MedicalExpress.2016.03.03info:eu-repo/semantics/openAccessSilva,Tennyson ReneLima,Marcelo Lopes deeng2016-06-14T00:00:00Zoai:scielo:S2358-04292016000300003Revistahttp://www.medicalexpress.net.brhttps://old.scielo.br/oai/scielo-oai.php||medicalexpress@me.net.br2358-04292318-8111opendoar:2016-06-14T00:00MedicalExpress (São Paulo. Online) - Mavera Edições Científicas e Técnicas Ltda-MEfalse |
dc.title.none.fl_str_mv |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
title |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
spellingShingle |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis Silva,Tennyson Rene Urinary Calculi Lithotripsy Tomography Hounsfield Unit |
title_short |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
title_full |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
title_fullStr |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
title_full_unstemmed |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
title_sort |
Correlation between Hounsfield Unit Value and Stone Composition in Nephrolithiasis |
author |
Silva,Tennyson Rene |
author_facet |
Silva,Tennyson Rene Lima,Marcelo Lopes de |
author_role |
author |
author2 |
Lima,Marcelo Lopes de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Silva,Tennyson Rene Lima,Marcelo Lopes de |
dc.subject.por.fl_str_mv |
Urinary Calculi Lithotripsy Tomography Hounsfield Unit |
topic |
Urinary Calculi Lithotripsy Tomography Hounsfield Unit |
description |
OBJECTIVE: To examine whether the Hounsfield Unit value predicts calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy. METHOD: 119 patients who underwent percutaneous nephrolithotomy were prospectively evaluated between February 2012 and August 2014. Using thin cuts, the highest single-energy computed tomography attenuation value within a pixel was measured for each stone. Data regarding age and gender were assessed before surgery. The extracted stones were analyzed using infrared spectrophotometry. RESULTS: By receiver operating characteristics analysis, a cutoff value of 1548 Hounsfield Unit and an age of 42.5 years were used to determine the likelihood of a stone being composed of calcium oxalate monohydrate. A higher Hounsfield Unit value and increased age augmented the chances of a stone being composed of calcium oxalate monohydrate. In general, females had a greater likelihood of harboring calcium oxalate monohydrate stones than males. CONCLUSION: The maximum Hounsfield Unit value, as determined by unenhanced single-energy computed tomography in association with gender, predicts the presence of calcium oxalate monohydrate stones in patients who are undergoing percutaneous nephrolithotomy. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2358-04292016000300003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2358-04292016000300003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/MedicalExpress.2016.03.03 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Mavera Edições Técnicas e Científicas Ltda |
publisher.none.fl_str_mv |
Mavera Edições Técnicas e Científicas Ltda |
dc.source.none.fl_str_mv |
MedicalExpress v.3 n.3 2016 reponame:MedicalExpress (São Paulo. Online) instname:Mavera Edições Científicas e Técnicas Ltda-ME instacron:METC |
instname_str |
Mavera Edições Científicas e Técnicas Ltda-ME |
instacron_str |
METC |
institution |
METC |
reponame_str |
MedicalExpress (São Paulo. Online) |
collection |
MedicalExpress (São Paulo. Online) |
repository.name.fl_str_mv |
MedicalExpress (São Paulo. Online) - Mavera Edições Científicas e Técnicas Ltda-ME |
repository.mail.fl_str_mv |
||medicalexpress@me.net.br |
_version_ |
1754734597043650560 |