Comparative Investigation of Bone Mineral Density Using CT and DEXA in a Canine Femoral Model

verfasst von: Karin Lucas, Bernd Arno Behrens, Ingo Nolte, Vladimir Galindo-Zamora, Stefanie Betancur, Amer Almohallami, Anas Bouguecha, Ayman Mostafa, Matthias Lerch, Christina Stukenborg-Colsman, Patrick Wefstaedt
Abstract: Bone density measurements using computed tomography (CT) instead of dual-energy X-ray absorptiometry (DEXA) are currently of great interest in human and veterinary medical research as it would be beneficial to use CT scans obtained for other indications also for determining bone density. For Hounsfield units (HU) measured with CT in specific regions of interests (ROIs) in one or several slice/s a correlation with bone mineral density (BMD) measured by DEXA in humans and dogs of between 0.44 and 0.77 is reported in the literature. In the present study, instead certain volumes of interest (VOIs) obtained by CT scan and the corresponding HU to the respective VOIs were compared with the bone mineral density of the corresponding areas measured by DEXA. The aim of the study was to investigate whether this procedure gives more accurate information about bone density of the bones as three-dimensional objects of the respective patient. Correlation between measured HU in the respective VOI and BMD measured with DEXA in the corresponding ROI showed a very good correlation of 0.93. Linear regression with R² = 0.85 (p = 0.0262) was calculated. Except for VOI5, similar distribution of values and significant differences (p < 0.0001–0.0087) between ROIs/VOIs were detected. Determining HU for assessing bone mineral density in a certain volume provides more accurate results than those previously reported from two-dimensional (2D) CT measurements.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Externe Organisation(en): Stiftung Tierärztliche Hochschule Hannover
Universidad Nacional de Colombia
Cairo University
Medizinische Hochschule Hannover (MHH)
Typ: Artikel
Journal: Journal of orthopaedic research
Band: 35
Seiten: 2667-2672
Anzahl der Seiten: 6
ISSN: 0736-0266
Publikationsdatum: 07.04.2017
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Orthopädie und Sportmedizin
Elektronische Version(en): https://doi.org/10.1002/jor.23574 (Zugang: Offen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@article{669b828c68d149d6af9ee0648bf74771,
title = "Comparative Investigation of Bone Mineral Density Using CT and DEXA in a Canine Femoral Model",
abstract = "Bone density measurements using computed tomography (CT) instead of dual-energy X-ray absorptiometry (DEXA) are currently of great interest in human and veterinary medical research as it would be beneficial to use CT scans obtained for other indications also for determining bone density. For Hounsfield units (HU) measured with CT in specific regions of interests (ROIs) in one or several slice/s a correlation with bone mineral density (BMD) measured by DEXA in humans and dogs of between 0.44 and 0.77 is reported in the literature. In the present study, instead certain volumes of interest (VOIs) obtained by CT scan and the corresponding HU to the respective VOIs were compared with the bone mineral density of the corresponding areas measured by DEXA. The aim of the study was to investigate whether this procedure gives more accurate information about bone density of the bones as three-dimensional objects of the respective patient. Correlation between measured HU in the respective VOI and BMD measured with DEXA in the corresponding ROI showed a very good correlation of 0.93. Linear regression with R2 = 0.85 (p = 0.0262) was calculated. Except for VOI5, similar distribution of values and significant differences (p < 0.0001–0.0087) between ROIs/VOIs were detected. Determining HU for assessing bone mineral density in a certain volume provides more accurate results than those previously reported from two-dimensional (2D) CT measurements.",
keywords = "bone mineral density, canine femur, computed tomography, DEXA, volume of interest",
author = "Karin Lucas and Behrens, {Bernd Arno} and Ingo Nolte and Vladimir Galindo-Zamora and Stefanie Betancur and Amer Almohallami and Anas Bouguecha and Ayman Mostafa and Matthias Lerch and Christina Stukenborg-Colsman and Patrick Wefstaedt",
note = "Funding information: This study was performed in association with the subproject D6 of the Collaborative Research Center 599 “Sustainable degradable and permanent implants out of metallic and ceramic materials.” The authors wish to thank the German Research Foundation (DFG) for providing financial support.",
year = "2017",
month = apr,
day = "7",
doi = "10.1002/jor.23574",
language = "English",
volume = "35",
pages = "2667--2672",
journal = "Journal of orthopaedic research",
issn = "0736-0266",
publisher = "Wiley-Blackwell",
number = "12",
}