A multi-center comparison of dual energy X-ray absorptiometers: In vivo and in vitro soft tissue measurement View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

1997-05

AUTHORS

CD Economos, ME Nelson, MA Fiatarone, GE Dallal, SB Heymsfield, J Wang, S Yasumara, R Ma, AN Vaswani, M Russell-Aulet, RN Pierson

ABSTRACT

OBJECTIVE: To assess intra- and inter-site soft tissue variability by dual energy X-ray absorptiometry (DXA). DESIGN: Cross-sectional trial. SETTING: Three medical research institutions. SUBJECTS: Five humans (in vivo) and four phantoms (in vitro), configured from two whole body phantoms with artificial skeletons and thickness overlays. INTERVENTIONS: Duplicate total-body DXA scans were performed on all subjects at each institution within a 15 d period. RESULTS: All intra-site coefficients of variation (CV) were < 0.5% for total tissue mass, but in vitro and in vivo Cvs were 7.2% and 2.3% for fat mass (FM) and 2.5% and 0.9% for lean mass (LM), respectively. Several total-body and regional FM and LM measurements were significantly different between sites (P < 0.05), with percent differences between sites ranging from 2.6-13.3% for FM and from 1.6-13.6% for LM. Site 2 was consistently lower for FM and Site 3 was consistently lower for LM. CONCLUSIONS: These results stress the need for both rigorous and standardized cross-calibration procedures for soft tissue measurement by DXA. More... »

PAGES

312

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/sj.ejcn.1600400

DOI

http://dx.doi.org/10.1038/sj.ejcn.1600400

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1045630715

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/9152682


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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1038/sj.ejcn.1600400'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1038/sj.ejcn.1600400'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1038/sj.ejcn.1600400'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1038/sj.ejcn.1600400'


 

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