Document Detail


Comparison of dual-photon absorptiometry systems for total-body bone and soft tissue measurements: dual-energy X-rays versus gadolinium 153.
MedLine Citation:
PMID:  1858524     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A total of 81 subjects (41 males and 40 females) were scanned by dual-photon absorptiometry by 153Gd source (DPA; Lunar DP4) and by dual-energy x-ray absorptiometry (DEXA; Lunar-DPX) within a 24 h period. Total-body bone mineral density (TBMD), calcium content (Ca), and soft tissue mass (ST) were determined with a precision of about 1-1.5% using DPA and 0.5-1.0% using DEXA. Measurements of TBMD, Ca, ST, bone area (area), percentage fat, and regional bone mineral densities (BMD) were compared. Paired t-tests showed small but significant differences between all measurements. Correlations (r) for TBMD, Ca, area, ST, percentage fat, arm BMD, leg BMD, and trunk BMD were 0.99, 0.99, 0.97, 0.99, 0.97, 0.99, 0.99, and 0.98. There were small systematic differences for TBMD (less than 1%), calcium (3%), bone area (3%), soft tissue mass (7%), and percentage fat (9%) between the two approaches. Regression equations are given relating these measurements.
Authors:
M Russell-Aulet; J Wang; J Thornton; R N Pierson
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research     Volume:  6     ISSN:  0884-0431     ISO Abbreviation:  J. Bone Miner. Res.     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-08-28     Completed Date:  1991-08-28     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8610640     Medline TA:  J Bone Miner Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  411-5     Citation Subset:  IM    
Affiliation:
Department of Medicine, St. Luke's/Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, NY.
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MeSH Terms
Descriptor/Qualifier:
Absorptiometry, Photon / methods*
Bone Density*
Calcium / analysis
Connective Tissue / anatomy & histology,  chemistry
Female
Gadolinium / diagnostic use
Humans
Lipids / analysis
Male
Radioisotopes / diagnostic use
Regression Analysis
Grant Support
ID/Acronym/Agency:
DK37352/DK/NIDDK NIH HHS
Chemical
Reg. No./Substance:
0/Lipids; 0/Radioisotopes; 7440-54-2/Gadolinium; 7440-70-2/Calcium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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