Publicação
Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment
| Resumo: | Objective: To induce a reduction in dose, using a paediatric phantom, through the variation of exposure parameters and filtration, without adversely affecting image quality. Methods: All images were acquired using a Kyoto Kagaku paediatric phantom and a Canon DR detector. The phantom was positioned supine for all projections: wrist (DP, lateral) and ribs (AP, oblique). Three dose protocols were established using different mAs values (high, medium and low) and copper (Cu) filtration was added to each protocol. DAP was used to calculate the ESD for each exposure. Using ImageJ, CNR was calculated for the physical measurement of image quality. Image quality was assessed by fifteen observers (visual grading analysis (VGA)). Results: The highest doses were recorded with the high dose protocol, ranging from 5.60-39.22μGy for the wrist and 5.33-129.67μGy for the ribs. When increasing the Cu filtration a decrease in ESD was observed. A difference of 0.1 in VGA score was noted between high and low dose protocols without the use of filtration, while a difference of 0.3 was noted when using filtration. As mAs increased, VGA scores increased. Fracture visibility was minimally affected by Cu filtration or projection variation. Conclusion: The variation of exposure parameters in digital radiography can achieve a dose reduction without impairing image quality in bone fractures. Superior image quality can be achieved for DP and lateral wrist projections without Cu filtration. However, the addition of Cu filtration for the rib projections has almost no impact on overall image quality. |
|---|---|
| Autores principais: | Lança, Luís |
| Outros Autores: | Bowdler, M. W.; Creedon, J.; Dayer, V.; Stensholt, N.; Pinhão, S.; Visser, M. B.; Jorge, José |
| Assunto: | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| Ano: | 2017 |
| País: | Portugal |
| Tipo de documento: | capítulo de livro |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Científico do Instituto Politécnico de Lisboa |
| _version_ | 1866887538633867264 |
|---|---|
| author | Lança, Luís |
| author2 | Bowdler, M. W. Creedon, J. Dayer, V. Stensholt, N. Pinhão, S. Visser, M. B. Jorge, José |
| author2_role | author author author author author author author |
| author_facet | Lança, Luís Bowdler, M. W. Creedon, J. Dayer, V. Stensholt, N. Pinhão, S. Visser, M. B. Jorge, José |
| author_role | author |
| contributor_name_str_mv | RCIPL |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Lança, Luís\"},{\"Person.name\":\"Bowdler, M. W.\"},{\"Person.name\":\"Creedon, J.\"},{\"Person.name\":\"Dayer, V.\"},{\"Person.name\":\"Stensholt, N.\"},{\"Person.name\":\"Pinhão, S.\"},{\"Person.name\":\"Visser, M. B.\"},{\"Person.name\":\"Jorge, José\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RCIPL |
| datacite.creators.creator.creatorName.fl_str_mv | Lança, Luís Bowdler, M. W. Creedon, J. Dayer, V. Stensholt, N. Pinhão, S. Visser, M. B. Jorge, José |
| datacite.date.Accepted.fl_str_mv | 2017-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2018-12-28T20:53:22Z |
| datacite.date.embargoed.fl_str_mv | 2018-12-28T20:53:22Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| datacite.titles.title.fl_str_mv | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| dc.contributor.none.fl_str_mv | RCIPL |
| dc.creator.none.fl_str_mv | Lança, Luís Bowdler, M. W. Creedon, J. Dayer, V. Stensholt, N. Pinhão, S. Visser, M. B. Jorge, José |
| dc.date.Accepted.fl_str_mv | 2017-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2018-12-28T20:53:22Z |
| dc.date.embargoed.fl_str_mv | 2018-12-28T20:53:22Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.21/9213 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Akershus University College |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| dc.title.fl_str_mv | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_3248 |
| description | Objective: To induce a reduction in dose, using a paediatric phantom, through the variation of exposure parameters and filtration, without adversely affecting image quality. Methods: All images were acquired using a Kyoto Kagaku paediatric phantom and a Canon DR detector. The phantom was positioned supine for all projections: wrist (DP, lateral) and ribs (AP, oblique). Three dose protocols were established using different mAs values (high, medium and low) and copper (Cu) filtration was added to each protocol. DAP was used to calculate the ESD for each exposure. Using ImageJ, CNR was calculated for the physical measurement of image quality. Image quality was assessed by fifteen observers (visual grading analysis (VGA)). Results: The highest doses were recorded with the high dose protocol, ranging from 5.60-39.22μGy for the wrist and 5.33-129.67μGy for the ribs. When increasing the Cu filtration a decrease in ESD was observed. A difference of 0.1 in VGA score was noted between high and low dose protocols without the use of filtration, while a difference of 0.3 was noted when using filtration. As mAs increased, VGA scores increased. Fracture visibility was minimally affected by Cu filtration or projection variation. Conclusion: The variation of exposure parameters in digital radiography can achieve a dose reduction without impairing image quality in bone fractures. Superior image quality can be achieved for DP and lateral wrist projections without Cu filtration. However, the addition of Cu filtration for the rib projections has almost no impact on overall image quality. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | bookPart |
| fulltext.url.fl_str_mv | https://repositorio.ipl.pt/bitstreams/7309640f-aa37-45f5-afe0-e657b02b3478/download |
| id | ripl_dcf4847e2a91cbf975d4cdd4c4721d4e |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.21/9213 |
| instacron_str | ipl |
| institution | Instituto Politécnico de Lisboa |
| instname_str | Instituto Politécnico de Lisboa |
| language | eng |
| network_acronym_str | ripl |
| network_name_str | Repositório Científico do Instituto Politécnico de Lisboa |
| oai_identifier_str | oai:repositorio.ipl.pt:10400.21/9213 |
| organization_str_mv | urn:organizationAcronym:ipl |
| person_str_mv | Lança, Luís Bowdler, M. W. Creedon, J. Dayer, V. Stensholt, N. Pinhão, S. Visser, M. B. Jorge, José |
| publishDate | 2017 |
| publisher.none.fl_str_mv | Akershus University College |
| reponame_str | Repositório Científico do Instituto Politécnico de Lisboa |
| repository_id_str | urn:repositoryAcronym:ripl |
| service_str_mv | urn:repositoryAcronym:ripl |
| spelling | engAkershus University Collegept_PTObjective: To induce a reduction in dose, using a paediatric phantom, through the variation of exposure parameters and filtration, without adversely affecting image quality. Methods: All images were acquired using a Kyoto Kagaku paediatric phantom and a Canon DR detector. The phantom was positioned supine for all projections: wrist (DP, lateral) and ribs (AP, oblique). Three dose protocols were established using different mAs values (high, medium and low) and copper (Cu) filtration was added to each protocol. DAP was used to calculate the ESD for each exposure. Using ImageJ, CNR was calculated for the physical measurement of image quality. Image quality was assessed by fifteen observers (visual grading analysis (VGA)). Results: The highest doses were recorded with the high dose protocol, ranging from 5.60-39.22μGy for the wrist and 5.33-129.67μGy for the ribs. When increasing the Cu filtration a decrease in ESD was observed. A difference of 0.1 in VGA score was noted between high and low dose protocols without the use of filtration, while a difference of 0.3 was noted when using filtration. As mAs increased, VGA scores increased. Fracture visibility was minimally affected by Cu filtration or projection variation. Conclusion: The variation of exposure parameters in digital radiography can achieve a dose reduction without impairing image quality in bone fractures. Superior image quality can be achieved for DP and lateral wrist projections without Cu filtration. However, the addition of Cu filtration for the rib projections has almost no impact on overall image quality.application/pdfpt_PTPaediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairmentLança, LuísBowdler, M. W.Creedon, J.Dayer, V.Stensholt, N.Pinhão, S.Visser, M. B.Jorge, JoséHostingInstitutionOrganizationalRCIPLe-mailmailto:rcaap@sp.ipl.ptrcaap@sp.ipl.ptISBNIsPartOf97819123370952018-12-28T20:53:22Z20172017-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.21/9213http://purl.org/coar/access_right/c_abf2open accessRadiologyDigital radiographyDosimetryPhantomChildrenExposure parametersFiltration9715689 bytesliteraturehttp://purl.org/coar/resource_type/c_3248book part2017http://creativecommons.org/licenses/by-nc-nd/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ipl.pt/bitstreams/7309640f-aa37-45f5-afe0-e657b02b3478/download7792 |
| spellingShingle | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment Lança, Luís Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| status | SINGLETON |
| subject.fl_str_mv | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| title | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| title_full | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| title_fullStr | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| title_full_unstemmed | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| title_short | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| title_sort | Paediatric phantom dose optimization using digital radiography with variation of exposure parameters and filtration whilst minimising image quality impairment |
| topic | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| topic_facet | Radiology Digital radiography Dosimetry Phantom Children Exposure parameters Filtration |
| url | http://hdl.handle.net/10400.21/9213 |
| visible | 1 |