Results 331 to 340 of about 149,691 (385)

Clinical reproducibility of dual energy X‐ray absorptiometry

Journal of Orthopaedic Research, 1995
AbstractDual energy x‐ray absorptiometry is a technique advocated for the measurement of bone mass throughout the skeleton, and recently it has been used to measure changes in periprosthetic bone mass after joint replacement. The accuracy and precision of the method in clinical patient populations have not been firmly established.
P, Williams-Russo, J H, Healey, T P, Szatrowski, R, Schneider, S, Paget, K, Ales, P, Schwartzberg   +6 more
openaire   +2 more sources

Dual-energy X-Ray Absorptiometry

Clinical Obstetrics & Gynecology, 2013
Physicians and other health care providers requesting dual-energy x-ray bone density studies must be able to critically review and interpret such studies. This requires an understanding of the computerized result components of the studies and how such data can be applied in clinical practice. The timing and interpretation of serial bone density studies
openaire   +2 more sources

Agreement between supine and standing bioimpedance spectroscopy devices and dual‐energy X‐ray absorptiometry for body composition determination

Clinical Physiology and Functional Imaging, 2019
Research comparing bioimpedance spectroscopy (BIS) to dual‐energy X‐ray absorptiometry (DXA) is limited, especially with newer BIS devices that take measures in a standing position instead of the traditional supine position.
M. Esco, Michael V. Fedewa, T. Freeborn, J. Moon, J. Wingo, Zackary S. Cicone, Clifton J. Holmes, Bjoern Hornikel, Bailey A. Welborn   +8 more
semanticscholar   +1 more source

Dual‐energy X‐ray absorptiometry in neuromuscular diseases

Muscle & Nerve, 1994
AbstractBody components were measured noninvasively in patients with neuromuscular disease by using dual‐energy X‐ray absorptiometry (DXA), capable of separately analyzing fat, bone, and muscle content. In all patients with muscle atrophy of myogenic or neurogenic origin, muscle mass was markedly reduced. Although all three components (fat, muscle, and
F, Kanda, Y, Fujii, K, Takahashi, T, Fujita   +3 more
openaire   +2 more sources

Simulation studies of dual‐energy x‐ray absorptiometry

Medical Physics, 1989
Computer simulations were performed to predict the performance characteristics of dual‐energy x‐ray absorptiometry. K‐edge filter techniques were analyzed in detail and compared to 153Gd sources in terms of output intensity, precision, patient dose, image contrast, beam hardening, and marrow fat effects.
J A, Sorenson, P R, Duke, S W, Smith
openaire   +2 more sources

Enhanced precision with dual-energy x-ray absorptiometry

Calcified Tissue International, 1992
Repeat spine and femur measurements (5 per case) were done on 19 subjects with the DPX-L densitometer operating at 3 mA giving a radiation flux fourfold higher than the earlier DPX model. The precision for spine bone mineral density (BMD) was about 0.55% (L2-L4) and 0.48% (L1-L4) for 2-minute scans (2.4 mrem). The precision was only slightly lower (0.4-
R, Mazess, C H, Chesnut, M, McClung, H, Genant   +3 more
openaire   +2 more sources

Technical Standardization for Dual-Energy X-Ray Absorptiometry

Journal of Clinical Densitometry, 2004
Clinical applications of dual-energy X-ray absorptiometry (DXA) should be updated periodically to address new technologies and inconsistencies in the use of existing technologies. The 2003 Position Development Conference of the International Society for Clinical Densitometry addressed issues regarding hip and forearm regions of interest (ROIs ...
openaire   +2 more sources

Dual-energy X-ray absorptiometry and body composition

Nutrition, 1996
This review describes the advantages and limitations of dual-energy absorptiometry (DXA), a technique that is widely used clinically to assess a patient's risk of osteoporosis and to monitor the effects of therapy. DXA is also increasingly used to measure body composition in terms of fat and fat-free mass.
openaire   +2 more sources

Suspension criteria for dual energy X ray absorptiometry

Radiation Protection Dosimetry, 2012
The use of dual-energy X-ray absorptiometry (DXA) units primarily for the assessment of fracture risk and in the diagnosis of osteoporosis is ubiquitous in Europe and ever-expanding in its implementation worldwide. DXA is known for its reported low radiation dose and precision in the determination of bone mineral density.
openaire   +2 more sources

Imaging Method: Dual-Energy X-Ray Absorptiometry

2017
Dual energy X-ray absorptiometry is used for the assessment of physique traits of athletes. Given the use of X-rays and thus exposure to radiation, specific training by a suitably accredited national organisation is required before dual energy X-ray absorptiometry can be operated, and consideration of the cumulative X-ray dose for athletes needs to be ...
Slater, G J, Nana, Alisa, Kerr, Ava
openaire   +2 more sources