Blurred digital mammography images
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://doi.org/10.1259/bjr.20160271 |
Resumo: | Objective: Blurred images in full-field digital mammography are a problem in the UK Breast Screening Programme. Technical recalls may be due to blurring not being seen on lower resolution monitors used for review. This study assesses the visual detection of blurring on a 2.3-MP monitor and a 5-MP report grade monitor and proposes an observer standard for the visual detection of blurring on a 5-MP reporting grade monitor. Methods: 28 observers assessed 120 images for blurring; 20 images had no blurring present, whereas 100 images had blurring imposed through mathematical simulation at 0.2, 0.4, 0.6, 0.8 and 1.0mm levels of motion. Technical recall rate for both monitors and angular size at each level of motion were calculated. χ2 tests were used to test whether significant differences in blurring detection existed between 2.3- and 5-MP monitors. Results: The technical recall rate for 2.3- and 5-MP monitors are 20.3% and 9.1%, respectively. The angular size for 0.2- to 1-mm motion varied from 55 to 275 arc s. The minimum amount of motion for visual detection of blurring in this study is 0.4mm. For 0.2-mm simulated motion, there was no significant difference [χ2 (1, N=1095)51.61, p=0.20] in blurring detection between the 2.3- and 5-MP monitors. Conclusion: According to this study, monitors ≤2.3MP are not suitable for technical review of full-field digital mammography images for the detection of blur. Advances in knowledge: This research proposes the first observer standard for the visual detection of blurring. |
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Blurred digital mammography imagesAn analysis of technical recall and observer detection performanceRadiology Nuclear Medicine and imagingObjective: Blurred images in full-field digital mammography are a problem in the UK Breast Screening Programme. Technical recalls may be due to blurring not being seen on lower resolution monitors used for review. This study assesses the visual detection of blurring on a 2.3-MP monitor and a 5-MP report grade monitor and proposes an observer standard for the visual detection of blurring on a 5-MP reporting grade monitor. Methods: 28 observers assessed 120 images for blurring; 20 images had no blurring present, whereas 100 images had blurring imposed through mathematical simulation at 0.2, 0.4, 0.6, 0.8 and 1.0mm levels of motion. Technical recall rate for both monitors and angular size at each level of motion were calculated. χ2 tests were used to test whether significant differences in blurring detection existed between 2.3- and 5-MP monitors. Results: The technical recall rate for 2.3- and 5-MP monitors are 20.3% and 9.1%, respectively. The angular size for 0.2- to 1-mm motion varied from 55 to 275 arc s. The minimum amount of motion for visual detection of blurring in this study is 0.4mm. For 0.2-mm simulated motion, there was no significant difference [χ2 (1, N=1095)51.61, p=0.20] in blurring detection between the 2.3- and 5-MP monitors. Conclusion: According to this study, monitors ≤2.3MP are not suitable for technical review of full-field digital mammography images for the detection of blur. Advances in knowledge: This research proposes the first observer standard for the visual detection of blurring.Centro de Investigação em Saúde Pública (CISP/PHRC)RUNMa, Wang KeiBorgen, RitaKelly, JudithMillington, SaraHilton, BeverleyAspin, RobLança, CarlaHogg, Peter2018-02-28T23:13:12Z20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.1259/bjr.20160271eng0007-1285PURE: 2987318http://www.scopus.com/inward/record.url?scp=85014524144&partnerID=8YFLogxKhttps://doi.org/10.1259/bjr.20160271info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:17:24Zoai:run.unl.pt:10362/31439Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:29:39.663812Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Blurred digital mammography images An analysis of technical recall and observer detection performance |
title |
Blurred digital mammography images |
spellingShingle |
Blurred digital mammography images Ma, Wang Kei Radiology Nuclear Medicine and imaging |
title_short |
Blurred digital mammography images |
title_full |
Blurred digital mammography images |
title_fullStr |
Blurred digital mammography images |
title_full_unstemmed |
Blurred digital mammography images |
title_sort |
Blurred digital mammography images |
author |
Ma, Wang Kei |
author_facet |
Ma, Wang Kei Borgen, Rita Kelly, Judith Millington, Sara Hilton, Beverley Aspin, Rob Lança, Carla Hogg, Peter |
author_role |
author |
author2 |
Borgen, Rita Kelly, Judith Millington, Sara Hilton, Beverley Aspin, Rob Lança, Carla Hogg, Peter |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Centro de Investigação em Saúde Pública (CISP/PHRC) RUN |
dc.contributor.author.fl_str_mv |
Ma, Wang Kei Borgen, Rita Kelly, Judith Millington, Sara Hilton, Beverley Aspin, Rob Lança, Carla Hogg, Peter |
dc.subject.por.fl_str_mv |
Radiology Nuclear Medicine and imaging |
topic |
Radiology Nuclear Medicine and imaging |
description |
Objective: Blurred images in full-field digital mammography are a problem in the UK Breast Screening Programme. Technical recalls may be due to blurring not being seen on lower resolution monitors used for review. This study assesses the visual detection of blurring on a 2.3-MP monitor and a 5-MP report grade monitor and proposes an observer standard for the visual detection of blurring on a 5-MP reporting grade monitor. Methods: 28 observers assessed 120 images for blurring; 20 images had no blurring present, whereas 100 images had blurring imposed through mathematical simulation at 0.2, 0.4, 0.6, 0.8 and 1.0mm levels of motion. Technical recall rate for both monitors and angular size at each level of motion were calculated. χ2 tests were used to test whether significant differences in blurring detection existed between 2.3- and 5-MP monitors. Results: The technical recall rate for 2.3- and 5-MP monitors are 20.3% and 9.1%, respectively. The angular size for 0.2- to 1-mm motion varied from 55 to 275 arc s. The minimum amount of motion for visual detection of blurring in this study is 0.4mm. For 0.2-mm simulated motion, there was no significant difference [χ2 (1, N=1095)51.61, p=0.20] in blurring detection between the 2.3- and 5-MP monitors. Conclusion: According to this study, monitors ≤2.3MP are not suitable for technical review of full-field digital mammography images for the detection of blur. Advances in knowledge: This research proposes the first observer standard for the visual detection of blurring. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2017-01-01T00:00:00Z 2018-02-28T23:13:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://doi.org/10.1259/bjr.20160271 |
url |
https://doi.org/10.1259/bjr.20160271 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0007-1285 PURE: 2987318 http://www.scopus.com/inward/record.url?scp=85014524144&partnerID=8YFLogxK https://doi.org/10.1259/bjr.20160271 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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