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Technical principles of dual energy X-ray absorptiometry
Seminars in Nuclear Medicine, 1997Since its introduction nearly ten years ago, dual-energy x-ray absorptiometry (DXA) has become the single most widely used technique for performing bone densitometry studies. One reason for its popularity is the ability of DXA systems to measure bone mineral density (BMD) in the spine and proximal femur, the two most common sites for osteoporotic ...
Blake, G M, Fogelman, I
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Dual-Energy X-Ray Absorptiometry in Early Life
Hormone Research, 1997Dual-energy X-ray absorptiometry (DXA) is a safe and quick technique, and requires little cooperation from the patient. DXA has therefore been introduced progressively in paediatrics and neonatology to study bone mineral content and body composition.
Bernard L. Salle +3 more
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Single- and Dual-Energy: X-Ray Absorptiometry
European Radiology, 1997Osteoporosis is the most common of the metabolic disorders of bone. The condition is characterised by reduced bone mass and easy (fragility) fracture. Such fractures can occur in any site but are most frequent in the wrist, spine (vertebral body) and hip — areas of the skeleton rich in trabecular bone. Such fractures, and particularly those in the hip,
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The Use of Dual-Energy X-ray Absorptiometry in Animals
Investigative Radiology, 1996The use of dual-energy absorptiometry (DXA) to measure bone mineral content (BMC) and bone mineral density (BMD) is widespread in humans and has been adapted to animals because of the need to examine bone and body composition in longitudinal studies.
S J Grier, M R Alvis, A S Turner
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Clinical reproducibility of dual energy X‐ray absorptiometry
Journal of Orthopaedic Research, 1995AbstractDual 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.
John H. Healey +14 more
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Quality in dual-energy X-ray absorptiometry scans
Bone, 2017Dual-energy X-ray absorptiometry (DXA) is the gold standard for measuring bone mineral density (BMD), making the diagnosis of osteoporosis, and for monitoring changes in BMD over time. DXA data are also used in the determination of fracture risk. Procedural steps in DXA scanning can be broken down into scan acquisition, analysis, interpretation, and ...
Sarah L. Morgan, Ginnie L. Prater
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The clinical role of dual energy X-ray absorptiometry
European Journal of Radiology, 2009Dual energy X-ray absorptiometry (DXA) measurements of hip and spine bone mineral density (BMD) have an important role in the evaluation of individuals at risk of osteoporosis, and in helping clinicians advise patients about the appropriate use of anti-fracture treatment.
Blake, GM, Folgelman, I
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Simulation studies of dual‐energy x‐ray absorptiometry
Medical Physics, 1989Computer 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.
James A. Sorenson +2 more
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Enhanced precision with dual-energy x-ray absorptiometry
Calcified Tissue International, 1992Repeat 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-
Richard B. Mazess +3 more
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Dual‐energy X‐ray absorptiometry in neuromuscular diseases
Muscle & Nerve, 1994AbstractBody 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
Takuo Fujita +3 more
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