Value of a lower limb immobilization device for SPECT/CT image fusion optimization
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/4747 |
Resumo: | The foot and the ankle are small structures commonly affected by disorders, and their complex anatomy represent significant diagnostic challenges. SPECT/CT Image fusion can provide missing anatomical and bone structure information to functional imaging, which is particularly useful to increase diagnosis certainty of bone pathology. However, due to SPECT acquisition duration, patient’s involuntary movements may lead to misalignment between SPECT and CT images. Patient motion can be reduced using a dedicated patient support. We aimed at designing an ankle and foot immobilizing device and measuring its efficacy at improving image fusion. Methods: We enrolled 20 patients undergoing distal lower-limb SPECT/CT of the ankle and the foot with and without a foot holder. The misalignment between SPECT and CT images was computed by manually measuring 14 fiducial markers chosen among anatomical landmarks also visible on bone scintigraphy. Analysis of variance was performed for statistical analysis. Results: The obtained absolute average difference without and with support was 5.1±5.2 mm (mean±SD) and 3.1±2.7 mm, respectively, which is significant (p<0.001). Conclusion: The introduction of the foot holder significantly decreases misalignment between SPECT and CT images, which may have clinical influence in the precise localization of foot and ankle pathology. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Value of a lower limb immobilization device for SPECT/CT image fusion optimizationNuclear medicineSPECT/CTMisalignmentLower-limbPatient-motionThe foot and the ankle are small structures commonly affected by disorders, and their complex anatomy represent significant diagnostic challenges. SPECT/CT Image fusion can provide missing anatomical and bone structure information to functional imaging, which is particularly useful to increase diagnosis certainty of bone pathology. However, due to SPECT acquisition duration, patient’s involuntary movements may lead to misalignment between SPECT and CT images. Patient motion can be reduced using a dedicated patient support. We aimed at designing an ankle and foot immobilizing device and measuring its efficacy at improving image fusion. Methods: We enrolled 20 patients undergoing distal lower-limb SPECT/CT of the ankle and the foot with and without a foot holder. The misalignment between SPECT and CT images was computed by manually measuring 14 fiducial markers chosen among anatomical landmarks also visible on bone scintigraphy. Analysis of variance was performed for statistical analysis. Results: The obtained absolute average difference without and with support was 5.1±5.2 mm (mean±SD) and 3.1±2.7 mm, respectively, which is significant (p<0.001). Conclusion: The introduction of the foot holder significantly decreases misalignment between SPECT and CT images, which may have clinical influence in the precise localization of foot and ankle pathology.Society of Nuclear Medicine and Molecular ImagingRCIPLMachado, Joana do MarMonteiro, Marina S.Vieira, Victor FernandesCollinot, Jean-AybertPrior, John O.Vieira, LinaJorge, José2015-08-13T15:21:22Z2015-062015-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/4747engMachado JM, Monteiro MS, Vieira VF, Collinot JA, Prior JO, Vieira L, et al. Value of a lower limb immobilization device for SPECT/CT image fusion optimization. J Nucl Med Technol. 2015;43(2):98-102.10.2967/jnmt.114.145771info: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:RCAAP2023-08-03T09:47:12Zoai:repositorio.ipl.pt:10400.21/4747Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:14:08.422634Repositório 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 |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
title |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
spellingShingle |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization Machado, Joana do Mar Nuclear medicine SPECT/CT Misalignment Lower-limb Patient-motion |
title_short |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
title_full |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
title_fullStr |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
title_full_unstemmed |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
title_sort |
Value of a lower limb immobilization device for SPECT/CT image fusion optimization |
author |
Machado, Joana do Mar |
author_facet |
Machado, Joana do Mar Monteiro, Marina S. Vieira, Victor Fernandes Collinot, Jean-Aybert Prior, John O. Vieira, Lina Jorge, José |
author_role |
author |
author2 |
Monteiro, Marina S. Vieira, Victor Fernandes Collinot, Jean-Aybert Prior, John O. Vieira, Lina Jorge, José |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Machado, Joana do Mar Monteiro, Marina S. Vieira, Victor Fernandes Collinot, Jean-Aybert Prior, John O. Vieira, Lina Jorge, José |
dc.subject.por.fl_str_mv |
Nuclear medicine SPECT/CT Misalignment Lower-limb Patient-motion |
topic |
Nuclear medicine SPECT/CT Misalignment Lower-limb Patient-motion |
description |
The foot and the ankle are small structures commonly affected by disorders, and their complex anatomy represent significant diagnostic challenges. SPECT/CT Image fusion can provide missing anatomical and bone structure information to functional imaging, which is particularly useful to increase diagnosis certainty of bone pathology. However, due to SPECT acquisition duration, patient’s involuntary movements may lead to misalignment between SPECT and CT images. Patient motion can be reduced using a dedicated patient support. We aimed at designing an ankle and foot immobilizing device and measuring its efficacy at improving image fusion. Methods: We enrolled 20 patients undergoing distal lower-limb SPECT/CT of the ankle and the foot with and without a foot holder. The misalignment between SPECT and CT images was computed by manually measuring 14 fiducial markers chosen among anatomical landmarks also visible on bone scintigraphy. Analysis of variance was performed for statistical analysis. Results: The obtained absolute average difference without and with support was 5.1±5.2 mm (mean±SD) and 3.1±2.7 mm, respectively, which is significant (p<0.001). Conclusion: The introduction of the foot holder significantly decreases misalignment between SPECT and CT images, which may have clinical influence in the precise localization of foot and ankle pathology. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-13T15:21:22Z 2015-06 2015-06-01T00:00:00Z |
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 |
http://hdl.handle.net/10400.21/4747 |
url |
http://hdl.handle.net/10400.21/4747 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Machado JM, Monteiro MS, Vieira VF, Collinot JA, Prior JO, Vieira L, et al. Value of a lower limb immobilization device for SPECT/CT image fusion optimization. J Nucl Med Technol. 2015;43(2):98-102. 10.2967/jnmt.114.145771 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Society of Nuclear Medicine and Molecular Imaging |
publisher.none.fl_str_mv |
Society of Nuclear Medicine and Molecular Imaging |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133398570106880 |