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A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study

BACKGROUND: High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT) is an emerging technology for evaluation of bone quality in Rheumatoid Arthritis (RA). However, there are limitations with standard HR-pQCT imaging protocols for examination of regions of bone commonly affected in RA....

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Autores principales: Feehan, Lynne, Buie, Helen, Li, Linda, McKay, Heather
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3877978/
https://www.ncbi.nlm.nih.gov/pubmed/24364867
http://dx.doi.org/10.1186/1471-2474-14-367
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author Feehan, Lynne
Buie, Helen
Li, Linda
McKay, Heather
author_facet Feehan, Lynne
Buie, Helen
Li, Linda
McKay, Heather
author_sort Feehan, Lynne
collection PubMed
description BACKGROUND: High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT) is an emerging technology for evaluation of bone quality in Rheumatoid Arthritis (RA). However, there are limitations with standard HR-pQCT imaging protocols for examination of regions of bone commonly affected in RA. We developed a customized protocol for evaluation of volumetric bone mineral density (vBMD) and microstructure at the metacarpal head (MH), metacarpal shaft (MS) and ultra-ultra-distal (UUD) radius; three sites commonly affected in RA. The purpose was to evaluate short-term measurement precision for bone density and microstructure at these sites. METHODS: 12 non-RA participants, individuals likely to have no pre-existing bone damage, consented to participate [8 females, aged 23 to 71 y [median (IQR): 44 (28) y]. The custom protocol includes more comfortable/stable positioning and adapted cortical segmentation and direct transformation analysis methods. Dominant arm MH, MS and UUD radius scans were completed on day one; repeated twice (with repositioning) three to seven days later. Short-term precision for repeated measures was explored using intraclass correlational coefficient (ICC), mean coefficient of variation (CV%), root mean square coefficient of variation (RMSCV%) and least significant change (LSC%(95)). RESULTS: Bone density and microstructure precision was excellent: ICCs varied from 0.88 (MH(2) trabecular number) to .99 (MS(3) polar moment of inertia); CV% varied from < 1 (MS(2) vBMD) to 6 (MS(3) marrow space diameter); RMSCV% varied from < 1 (MH(2) full bone vBMD) to 7 (MS(3) marrow space diameter); and LSC% (95)varied from 2 (MS(2) full bone vBMD to 21 (MS(3) marrow space diameter). Cortical porosity measures were the exception; RMSCV% varying from 19 (MS(3)) to 42 (UUD). No scans were stopped for discomfort. 5% (5/104) were repeated due to motion during imaging. 8% (8/104) of final images had motion artifact graded > 3 on 5 point scale. CONCLUSION: In our facility, this custom protocol extends the potential for in vivo HR-pQCT imaging to assess, with high precision, regional differences in bone quality at three sites commonly affected in RA. Our methods are easy to adopt and we recommend other users of HR-pQCT consider this protocol for further evaluations of its precision and feasibility in their imaging facilities.
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spelling pubmed-38779782014-01-03 A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study Feehan, Lynne Buie, Helen Li, Linda McKay, Heather BMC Musculoskelet Disord Research Article BACKGROUND: High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT) is an emerging technology for evaluation of bone quality in Rheumatoid Arthritis (RA). However, there are limitations with standard HR-pQCT imaging protocols for examination of regions of bone commonly affected in RA. We developed a customized protocol for evaluation of volumetric bone mineral density (vBMD) and microstructure at the metacarpal head (MH), metacarpal shaft (MS) and ultra-ultra-distal (UUD) radius; three sites commonly affected in RA. The purpose was to evaluate short-term measurement precision for bone density and microstructure at these sites. METHODS: 12 non-RA participants, individuals likely to have no pre-existing bone damage, consented to participate [8 females, aged 23 to 71 y [median (IQR): 44 (28) y]. The custom protocol includes more comfortable/stable positioning and adapted cortical segmentation and direct transformation analysis methods. Dominant arm MH, MS and UUD radius scans were completed on day one; repeated twice (with repositioning) three to seven days later. Short-term precision for repeated measures was explored using intraclass correlational coefficient (ICC), mean coefficient of variation (CV%), root mean square coefficient of variation (RMSCV%) and least significant change (LSC%(95)). RESULTS: Bone density and microstructure precision was excellent: ICCs varied from 0.88 (MH(2) trabecular number) to .99 (MS(3) polar moment of inertia); CV% varied from < 1 (MS(2) vBMD) to 6 (MS(3) marrow space diameter); RMSCV% varied from < 1 (MH(2) full bone vBMD) to 7 (MS(3) marrow space diameter); and LSC% (95)varied from 2 (MS(2) full bone vBMD to 21 (MS(3) marrow space diameter). Cortical porosity measures were the exception; RMSCV% varying from 19 (MS(3)) to 42 (UUD). No scans were stopped for discomfort. 5% (5/104) were repeated due to motion during imaging. 8% (8/104) of final images had motion artifact graded > 3 on 5 point scale. CONCLUSION: In our facility, this custom protocol extends the potential for in vivo HR-pQCT imaging to assess, with high precision, regional differences in bone quality at three sites commonly affected in RA. Our methods are easy to adopt and we recommend other users of HR-pQCT consider this protocol for further evaluations of its precision and feasibility in their imaging facilities. BioMed Central 2013-12-24 /pmc/articles/PMC3877978/ /pubmed/24364867 http://dx.doi.org/10.1186/1471-2474-14-367 Text en Copyright © 2013 Feehan et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Feehan, Lynne
Buie, Helen
Li, Linda
McKay, Heather
A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title_full A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title_fullStr A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title_full_unstemmed A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title_short A customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
title_sort customized protocol to assess bone quality in the metacarpal head, metacarpal shaft and distal radius: a high resolution peripheral quantitative computed tomography precision study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3877978/
https://www.ncbi.nlm.nih.gov/pubmed/24364867
http://dx.doi.org/10.1186/1471-2474-14-367
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