Bone mineral content was determined in the central left os calcis and the right distal radius and ulna using the photon absorptiometric technique. It employed an ...

The evaluation of diffuse osteoporosis in patients with rheumatoid arthritis (RA) remains controversial. An important associated problem is the compounded effect of osteopenia secondary to chronic corticosteroid treatment. Photon-absorptiometric technique...

Two techniques for measuring the amount of Ca in the total skeleton were employed: total-body neutron activation analysis (TBNAA) and the determination of the mineral content of a bone of the appendicular skeleton (absorptiometric measurement of the radiu...

The determination of bone mineral content in vivo by means of gamma ray absorptiometry presupposes good statistics concerning the nuclear random counting process. In principle, therefore, the isotope source should be made as strong as possible. However, p...

Single- and dual-photon absorptiometric methods have been used in the past to identify populations at risk for bone loss, to define the osteoporotic syndrome in terms of bone mass, and to evaluate treatment regimens to prevent bone loss. Technical improvements have made these procedures available for the ...

Since the advent on non-invasive in vivo clinical bone densitometry, investigators have reported that regional bone mineral material loss accompanies the onset and continuance of anorexia nervosa (AN). Initial single-energy photon absorptiometric (SPA) studies were followed by a succession of dual-energy X-ray ...

The evaluation of diffuse osteoporosis in patients with rheumatoid arthritis (RA) remains controversial. An important associated problem is the compounded effect of osteopenia secondary to chronic corticosteroid treatment. Photon-absorptiometric techniques have been utilized for measurements of selected sites of the skeleton, such as the distal femur and the distal radius. The ...

Risedronate is used in osteoporosis treatment. Postmenopausal women enrolled in the Vertebral Efficacy with Risedronate Therapy trial received either risedronate (5 mg/day) or placebo for 3 years. Subjects received calcium and vitamin D supplementation if deficient at baseline. Lumbar spine bone mineral density (BMD) was measured at baseline and at 3 ...

The determination of vertebral column bone mineral content by dual photon absorptiometric methods is a problem of continued clinical interest. The more successful methods suffer from the frequent need of operator interaction in order to maintain good precision results. The authors have introduced a new objective algorithm that ...

We compared two anatomic sites for single-photon absorptiometric measurement of bone mineral content (BMC) in term and preterm infants. The distal one third of the radius and the midportion of the humerus were evaluated for measurements of BMC with an unmodified, commercially available bone densitometer. We ...

Research on radiation detectors for absorptiometry analysis of errors affecting single photon absorptiometry and development of instrumentation, analysis of errors affecting dual photon absorptiometry and development of instrumentation, comparison of skeletal measurements with other techniques, cooperation with NASA projects for skeletal evaluation in spaceflight (Experiment MO-78) and in ...