Anorexia Nervosa

Eighteen women with anorexia nervosa underwent radial bone mass measurements at the 33 site with SPA (27). The results were compared to those from 28 healthy women. All of the women with anorexia had been amenorrheic for at least 1 year and had not been taking estrogens, progestins, or corticosteroids. The age of the women with anorexia ranged from 19 to 36 years with an average age of 25 years. The women with anorexia had significantly lower radial bone density than the controls (0.64 0.06 vs...

Alendronate Sodium

The effect of varying doses of alendronate sodium on lumbar spine and proximal femur bone density was evaluated in 994 women with postmenopausal osteoporosis by Liberman et al. (110). The women were followed for 3 years during which time they received either placebo, 5 mg alendronate daily, 10 mg alendronate daily for 3 years, or 20 mg alendronate daily for 1 year followed by 5 mg daily for the remaining 2 years. All of the women received 500 mg of calcium a day. Bone density measurements were...

Dexa Care G4

Manufacturer Osteometer MediTech, Inc., Hawthorne, CA Skeletal application(s) Forearm Scan time 2 minutes, distal forearm Percent young-adult and percent age-matched comparisons T-score and z-score Radiation dose 0.1 Sv per scan Dimensions 12.5 x 26 x 15.5 in (32 x 66 x 40 cm) Environmental operating temperature 58 to 86 F (15 to 30 C) X-ray source 55 kV, 300 A X-ray filtration K-edge filtration Fig. 13-16. The Osteometer DTX-200 DexaCare . A peripheral dual energy X-ray absorptiom-eter used...

Peripheral Site TScore Equivalents for the Diagnosis of Osteopenia and Osteoporosis

Attempts to determine site, device, and manufacturer-specific T-scores or T-score ranges at peripheral sites to identify women who are osteopenic or osteoporotic at the spine or proximal femur generally involve the calculation of sensitivity, specificity and area under the receiver operating characteristic curve AUC as discussed in Chapter 3. Fig. 9-1. The T-score regression on age for women by site and device, from the reference databases of the various manufacturers. The expected T-score for...