Results 201 to 210 of about 621,423 (276)
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Dual-photon Gd-153 absorptiometry of bone.
Radiology, 1985Dual-photon absorptiometry with gadolinium 153 was used to measure the mineral content of lumbar vertebrae in cadavers, excised vertebrae with marrow, and dry, marrow-free vertebrae. The error introduced by the surrounding soft tissue of cadavers was 3%, and the error in determining mineral mass or density in excised vertebrae was about 5%.
D Dempster +6 more
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Total body composition by dual-photon (153Gd) absorptiometry
The American Journal of Clinical Nutrition, 1984 The lean-fat composition (%FATR) of soft tissue and the mineral mass of the skeleton were determined in vivo using dual-photon (153Gd) absorptiometry (dose under 2 mrem). A rectilinear raster scan was made over the entire body in 18 subjects (14 female, 4 male). Single-photon absorptiometry (125I) measured bone mineral content on the radius. Percentage
Walter W. Peppler +2 more
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Vertebral and Peripheral Bone Mineral Content by Photon Absorptiometry
Investigative Radiology, 1977Dual photon absorptiometry with 153Gd was used to determine the bone mineral content of the lumbar spine of 46 subjects. The bone mineral content of the radius and ulna were measured on these same subjects using single photon absorptiometry. The bone mineral content at the peripheral sites was not a very accurate indicator of absolute bone mineral ...
M. Madsen
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Precision of dual-photon absorptiometry
Calcified Tissue International, 1988Precision of dual-photon absorptiometry (DPA) measurements was determined in a lumbar spine phantom and in humans. Approximately half of the measurements were made before and half after a 153gadolinium source change. The phantom was measured with different amounts of acrylic, which simulates human soft tissue, in order to evaluate the influence of body
Bess Dawson-Hughes +3 more
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Photon absorptiometry of hydrocarbons
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1986Abstract Measured and parametrised values of the attenuation coefficients of several hydrocarbons having a hydrogen-to-carbon weight ratio in the range from 0.05 to 0.16 and for photon energies 33, 75, 145, 279 and 662 keV are presented. The values are compared and possible trends and applications discussed.
D.A. Bradley, C.S. Chong, A.M. Ghose
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Photon absorptiometry of bone and bone standards
The International Journal of Applied Radiation and Isotopes, 1985Abstract Measured and parametrised values of the attenuation coefficients of bone and several bone standards are presented for the photon energies 33, 75, 145, 279 and 662 keV. The values are compared, inadequacies are highlighted and possible new formulations are discussed.
C.S. Chong, A.M. Ghose, D.A. Bradley
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Arthritis & Rheumatism, 1992
OBJECTIVE We assessed the prevalence, severity, and anatomic distribution of ankylosing spondylitis (AS)-related osteopenia (OP). METHODS We studied 70 patients (60 males, 10 premenopausal females) with AS (according to the New York criteria) to ...
J. Devogelaer +3 more
semanticscholar +1 more source
OBJECTIVE We assessed the prevalence, severity, and anatomic distribution of ankylosing spondylitis (AS)-related osteopenia (OP). METHODS We studied 70 patients (60 males, 10 premenopausal females) with AS (according to the New York criteria) to ...
J. Devogelaer +3 more
semanticscholar +1 more source
OSTEOPOROSIS IN HYPERTHYROIDISM ESTIMATED BY PHOTON ABSORPTIOMETRY
Acta Endocrinologica, 1979ABSTRACT The degree of osteoporosis in hyperthyroidism before and during treatment with carbimazole was studied by photon absorption technique of the right forearm and calcaneus. In addition serum total calcium, serum ionized calcium, serum phosphorus and serum alkaline phosphatase were determined.
Th. Friis, J. Linde
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Dual-energy X-ray absorptiometry versus single photon absorptiometry of the radius [PDF]
Calcified Tissue International, 1991 Radial diaphyseal bone mineral density (BMD) was measured at the standard one-third site by dual-energy X-ray absorptiometry (DEXA) and by 125I single photon absorptiometry (SPA) in 70 consecutive subjects, aged 12-86 years, with metabolic disorders of the skeleton. Each patient was measured once by the DEXA (Hologic QDR-1000) instrument and four times
Katheryn D. New +2 more
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Body fat from body density: underwater weighing vs. dual-photon absorptiometry.
American Journal of Physiology, 1989We measured fat in 286 healthy volunteers by underwater weighing (FUWW) and dual-photon absorptiometry (FDPA) to develop a translation table for the differing results from these entirely different techniques and to study the sources of these differences.
Jack Wang +4 more
semanticscholar +1 more source