Comparison of dual-photon absorptiometry systems for total-body bone and soft tissue measurements: Dual-energy X-rays versus gadolinium 153

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Journal of Bone and Mineral Research; (United States)

DOI:https://doi.org/10.1002/jbmr.5650060413· OSTI ID:5461652

Russell-Aulet, M; Wang, J; Thornton, J; Pierson, Jr, R N ^[1]

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1. Department of Medicine, St. Luke's/Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, NY (USA)

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.

• OSTI ID: 5461652
• Journal Information: Journal of Bone and Mineral Research; (United States), Journal Name: Journal of Bone and Mineral Research; (United States) Vol. 6:4; ISSN JBMRE; ISSN 0884-0431
• Country of Publication: United States
• Language: English

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62 RADIOLOGY AND NUCLEAR MEDICINE
ALKALINE EARTH METALS
ANIMAL TISSUES
ANIMALS
BETA DECAY RADIOISOTOPES
BODY
CALCIUM
CHEMICAL COMPOSITION
COMPARATIVE EVALUATIONS
COMPUTERIZED TOMOGRAPHY
CONNECTIVE TISSUE
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EMISSION COMPUTED TOMOGRAPHY
EVALUATION
EVEN-ODD NUCLEI
GADOLINIUM
GADOLINIUM 153
GADOLINIUM ISOTOPES
IMAGE PROCESSING
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIPIDS
MAMMALS
MAN
MATHEMATICS
METALS
NUCLEI
ORGANIC COMPOUNDS
ORGANS
PRIMATES
PROCESSING
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RARE EARTHS
REGRESSION ANALYSIS
SKELETON
STATISTICS
TISSUES
TOMOGRAPHY
VERTEBRATES