Validity of fan-beam dual-energy X-ray absorptiometry for measuring fat-free mass and leg muscle mass
نویسندگان
چکیده
MARJOLEIN VISSER,1,2 THOMAS FUERST,3 THOMAS LANG,3 LORAN SALAMONE,4 AND TAMARA B. HARRIS1 FOR THE HEALTH, AGING, AND BODY COMPOSITION STUDY— DUAL-ENERGY X-RAY ABSORPTIOMETRY AND BODY COMPOSITION WORKING GROUP 1Epidemiology, Demography and Biometry Program, National Institute on Aging, Bethesda, Maryland 20892; 2Institute for Research in Extramural Medicine, Faculty of Medicine, Vrije Universiteit, 1081 BT Amsterdam, The Netherlands; 3Department of Radiology, University of California, San Francisco, California 94105; and 4Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261
منابع مشابه
Measurement of fat mass using DEXA: a validation study in elderly adults.
The accuracy of total body fat mass and leg fat mass measurements by fan-beam dual-energy X-ray absorptiometry (DEXA) was assessed in 60 healthy elderly subjects (aged 70-79 yr). Total fat and leg fat mass at four leg regions (total leg, thigh, midthigh, and calf) were measured with the QDR 4500A (Hologic, Waltham, MA). The four-compartment model and multislice computed tomography scans were se...
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Dual-energy X-ray absorptiometry (DEXA) is reported to be inferior to computed tomography (CT) to measure changes in appendicular soft tissue composition. We compared CT- and DEXA-measured thigh muscle and fat mass to evaluate the random and systematic discrepancies between these two methods. Thigh skeletal muscle area (single-slice CT) was suboptimally (r(2) = 0.74, P < 0.0001) related to DEXA...
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Sarcopenia, defined as the loss of muscle mass accompanied by weakness, is an important factor leading to frailty and is a growing concern in the aging Japanese society. Muscle mass can be calculated by dual-energy X-ray absorptiometry (DXA), but results differ between devices produced by different manufactures. Thus, cross-calibration is needed to compare body composition results in multicente...
متن کاملValidation of fan beam dual energy x ray absorptiometry for body composition assessment in adults aged 18-45 years.
BACKGROUND Pencil beam dual energy x ray absorptiometry (DXA) has been shown to provide valid estimates of body fat (%BF), but DXA fan beam technology has not been adequately tested to determine its validity. OBJECTIVE To compare %BF estimated from fan beam DXA with %BF determined using two and three compartment (2C, 3C) models. METHODS Men (n = 25) and women (n = 31), aged 18-41 years, par...
متن کاملAssociations between pQCT-based fat and muscle area and density and DXA-based total and leg soft tissue mass in healthy women and men.
UNLABELLED Peripheral Quantitative Computed Tomography (pQCT) can be used for muscle and fat area and density assessments. These may independently influence muscle and fat mass measurements from Dual Energy X-ray Absorptiometry (DXA). OBJECTIVE To determine associations between pQCT-derived soft tissue density and area measures and DXA-derived soft tissue mass. METHODS Linear regression mod...
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تاریخ انتشار 1999