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Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods

BACKGROUND: Different low-dose computed tomography (CT) pelvimetry methods can be used to evaluate the size of birth canal before delivery. CT pelvimetry might generate an acceptable low fetal radiation dose but its measurement accuracy is unknown. PURPOSE: To investigate intra- and inter-rater meas...

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Autores principales: Phexell, Erika, Åkesson, Anna, Söderberg, Marcus, Bolejko, Anetta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560807/
https://www.ncbi.nlm.nih.gov/pubmed/31218082
http://dx.doi.org/10.1177/2058460119855187
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author Phexell, Erika
Åkesson, Anna
Söderberg, Marcus
Bolejko, Anetta
author_facet Phexell, Erika
Åkesson, Anna
Söderberg, Marcus
Bolejko, Anetta
author_sort Phexell, Erika
collection PubMed
description BACKGROUND: Different low-dose computed tomography (CT) pelvimetry methods can be used to evaluate the size of birth canal before delivery. CT pelvimetry might generate an acceptable low fetal radiation dose but its measurement accuracy is unknown. PURPOSE: To investigate intra- and inter-rater measurement reliability of cross-sectional and two spiral CT pelvimetry methods: standard spiral and short spiral. MATERIAL AND METHODS: Ten individuals (age ≥60 years, body mass index ≥30 kg/m(2)) having a CT scan of the abdomen also had CT pelvimetry scans. Three radiologists made independent measurements of each pelvimetry method on two occasions and also in consensus for a reference pelvimetry computed from the standard-dose CT scan of the abdomen. Inter- and intra-rater reliability was analyzed by intraclass correlation coefficient. RESULTS: Measurements in the short spiral pelvimetry demonstrated excellent intra- and inter-rater reliability, intraclass correlation coefficient ≥0.93, and good to excellent 95% confidence interval 0.87–0.99. Corresponding results of the standard spiral and cross-sectional pelvimetry showed good to excellent intraclass correlation coefficient ≥0.85 and ≥0.76, and 95% confidence interval was least good and moderate 0.73–0.98 and 0.59–0.97, respectively. Intraclass correlation coefficient between reference pelvimetry and other CT methods showed analogous results. CONCLUSION: The short spiral pelvimetry demonstrated high and best reliability in comparison to other methods. Standard spiral method showed also good measurement reliability but the short spiral pelvimetry generates lower fetal radiation dose. This method might be suitable for measurements at narrow pelvis. Patient acceptance and attitude to CT pelvimetry should be investigated.
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spelling pubmed-65608072019-06-19 Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods Phexell, Erika Åkesson, Anna Söderberg, Marcus Bolejko, Anetta Acta Radiol Open Research BACKGROUND: Different low-dose computed tomography (CT) pelvimetry methods can be used to evaluate the size of birth canal before delivery. CT pelvimetry might generate an acceptable low fetal radiation dose but its measurement accuracy is unknown. PURPOSE: To investigate intra- and inter-rater measurement reliability of cross-sectional and two spiral CT pelvimetry methods: standard spiral and short spiral. MATERIAL AND METHODS: Ten individuals (age ≥60 years, body mass index ≥30 kg/m(2)) having a CT scan of the abdomen also had CT pelvimetry scans. Three radiologists made independent measurements of each pelvimetry method on two occasions and also in consensus for a reference pelvimetry computed from the standard-dose CT scan of the abdomen. Inter- and intra-rater reliability was analyzed by intraclass correlation coefficient. RESULTS: Measurements in the short spiral pelvimetry demonstrated excellent intra- and inter-rater reliability, intraclass correlation coefficient ≥0.93, and good to excellent 95% confidence interval 0.87–0.99. Corresponding results of the standard spiral and cross-sectional pelvimetry showed good to excellent intraclass correlation coefficient ≥0.85 and ≥0.76, and 95% confidence interval was least good and moderate 0.73–0.98 and 0.59–0.97, respectively. Intraclass correlation coefficient between reference pelvimetry and other CT methods showed analogous results. CONCLUSION: The short spiral pelvimetry demonstrated high and best reliability in comparison to other methods. Standard spiral method showed also good measurement reliability but the short spiral pelvimetry generates lower fetal radiation dose. This method might be suitable for measurements at narrow pelvis. Patient acceptance and attitude to CT pelvimetry should be investigated. SAGE Publications 2019-06-11 /pmc/articles/PMC6560807/ /pubmed/31218082 http://dx.doi.org/10.1177/2058460119855187 Text en © The Foundation Acta Radiologica 2019 http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Research
Phexell, Erika
Åkesson, Anna
Söderberg, Marcus
Bolejko, Anetta
Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title_full Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title_fullStr Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title_full_unstemmed Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title_short Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
title_sort intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560807/
https://www.ncbi.nlm.nih.gov/pubmed/31218082
http://dx.doi.org/10.1177/2058460119855187
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