An evaluation of a new gel-coupled ultrasound device for the quantitative assessment of bone.

Détails

ID Serval
serval:BIB_C0C25B063D19
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
An evaluation of a new gel-coupled ultrasound device for the quantitative assessment of bone.
Périodique
British Journal of Radiology
Auteur⸱e⸱s
Tsuda-Futami E., Hans D., Njeh C.F., Fuerst T., Fan B., Li J., He Y.Q., Genant H.K.
ISSN
0007-1285
Statut éditorial
Publié
Date de publication
1999
Peer-reviewed
Oui
Volume
72
Numéro
859
Pages
691-700
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Résumé
Quantitative ultrasound (QUS) is now being accepted as a tool in the assessment of bone status. Most QUS devices measure broadband ultrasound attenuation (BUA) and speed of sound (SOS). A newly introduced device, the Acoustic Osteo-Screener (AOS-100), measures both SOS and an attenuation related parameter called the transmission index (TI) and provides a derived parameter called osteo sono-assessment index (OSI). The purpose of this study was to examine the reproducibility of this new device, compare the results with the UBA 575+ and evaluate the effect of using two platforms to compensate for different foot sizes on the measured values. 83 subjects aged 21-89 years, who gave informed consent, were recruited. Subjects were assigned to three different groups determined by age and health status. The short-term measurement precision (expressed as root mean square coefficient of variation) of SOS (0.13-0.16%) and TI (1.18-1.96%) was similar to and better than that obtained for the UBA 575+. Significant negative correlations were found between the differences in SOS measured with the two platforms (adaptors to adjust the position of the foot relative to the foot plate) and foot length (p < 0.0001). This implies that small feet are more influenced by the differences of measured location. All QUS parameters measured with the small platform were found to be significantly smaller than those with the large platform (p < 0.0001). The mean percentage differences were 0.6% in SOS, 2.8% in TI and 4.3% in OSI with the large foot platform giving larger value results. Proper use of the platforms resulted in more reproducible SOS and TI. This study demonstrated that the newly developed AOS-100 parameters TI and OSI were highly reproducible. This study also demonstrated that the use of an inappropriate platform can cause discrepancies in QUS readings and poor reproducibility.
Mots-clé
Adult, Aged, Aged, 80 and over, Anthropometry, Bone Density, Calcaneus, Equipment Design, Female, Humans, Male, Middle Aged, Reproducibility of Results
Pubmed
Web of science
Création de la notice
02/03/2009 12:33
Dernière modification de la notice
20/08/2019 15:35
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