Disease relevance of Densitometry, X-Ray

• Body weight, fat mass, and fat-free mass (measured by dual-energy x-ray absorptiometry) were similar in patients with HD and control subjects [1].
• METHODS: We measured bone mineral density (BMD) in the lumbar spine and hip using dual-energy x-ray absorptiometry (DXA) in premenopausal and postmenopausal healthy women who participated in our placebo-controlled tamoxifen chemoprevention of breast cancer trial [2].
• We measured bone mineral density (BMD) using dual-energy X-ray absorptiometry (DXA), bone resorption using urinary cross-linked N-terminal telopepides of type I collagen (NTx), and bone formation using osteocalcin (BGP) and bone alkaline phosphatase (BAP) [3].
• MAIN OUTCOME MEASURE(S): Endometriosis stages according to the criteria of the American Society for Reproductive Medicine, lumbar spine bone mineral density (L2-L4) as measured by dual-energy x-ray absorptiometry [4].
• The study aim was to measure body composition and fat distribution in premenopausal and postmenopausal women with insulin-dependent ([IDDM] n = 53) and non-insulin-dependent ([NIDDM] n = 32) diabetes mellitus by dual-energy x-ray absorptiometry [5].

Psychiatry related information on Densitometry, X-Ray

• The following variables were measured: regional body fat distribution as assessed by dual-energy x-ray absorptiometry, maximal oxygen uptake, physical activity, fasting levels of serum adiponectin, triglycerides, and high-density lipoprotein- and total cholesterol [6].
• Body composition and fat distribution were directly measured by dual energy X-ray absorptiometry (DXA); other parameters were waist-to-hip ratio (WTH), sex hormone binding globulin (SHBG), testosterone, androstenedione (A), oestradiol (E2), and lipids and lipoproteins; cigarette and alcohol consumption were recorded [7].

High impact information on Densitometry, X-Ray

• PATIENTS: Healthy, ambulatory postmenopausal women with usual intakes of vitamin D of 100 IU/d. MEASUREMENTS: Duplicate spine and whole-body scans were done by dual energy x-ray absorptiometry at 6-month intervals that were timed to periods when 25-hydroxyvitamin D levels were highest and lowest [8].
• Total body fat was determined by dual-energy X-ray absorptiometry, visceral fat by computed tomography, and insulin sensitivity by the tolbutamide-modified, frequently sampled intravenous glucose tolerance test with minimal modeling [9].
• Dual-energy x-ray absorptiometry (DXA) was used to measure BMD in 40 men with RA, 20 of whom were receiving low-dose corticosteroids (< or = 10 mg prednisolone daily), and in 20 healthy, age-matched male controls [10].
• Bone mineral density (BMD) were determined by dual energy X-ray absorptiometry in total body, lumbar spine and proximal femur; and evaluation of serum osteocalcin, d-pyridinoline, parathyroid hormone (THP), calcium and phosphate, and urine calcium [11].
• The control group (without treatment; n = 121) and the vitamin K2-treated group (n = 120), which received 45 mg/day orally vitamin K2, were followed for lumbar bone mineral density (LBMD; measured by dual-energy X-ray absorptiometry [DXA]) and occurrence of new clinical fractures [12].

Chemical compound and disease context of Densitometry, X-Ray

• Baseline demographics, medical and surgical history, calcium intake, physical activity, steroid use, Harvey Bradshaw Index, blood and urine tests, and dual-energy X-ray absorptiometry were obtained [13].
• MEASUREMENTS: Body weight and composition by dual-energy X-ray absorptiometry, blood pressure, serum lipids, lipoproteins, hemostatic factors, glucose, insulin, and leptin at baseline and every 3 months [14].
• MEASUREMENTS: Anthropometry; body composition and fat distribution by dual energy x-ray absorptiometry; physical activity, muscle strength, socioeconomic status, dietary composition and dehydroepiandrosterone sulfate (DHEAS) [15].
• Thirty-seven patients (26 females, 11 males, mean age 66.4 years) with pulmonary disease under long-term treatment with corticosteroids (5-10 mg prednisolone daily) and osteopenia/osteoporosis verified by dual-energy x-ray absorptiometry (DEXA) measurement were enrolled into the study [16].
• Bone mineral density evaluated by dual-energy X-ray absorptiometry after one-year treatment with calcitriol started in the predialysis phase of chronic renal failure [17].

Biological context of Densitometry, X-Ray

• Serum leptin levels and body composition (dual-energy x-ray absorptiometry) were measured in a cohort of 59 patients with terminal CRF (creatinine clearance rate, 8 +/- 1 ml/min) [18].
• We examined a relatively ethnically homogeneous group of 103 healthy postmenopausal Caucasian women of Mexican descent living in Northern California. We determined the VDR genotype and measured the BMD at the lumbar spine and femoral neck by dual-energy X-ray absorptiometry, as well as several biochemical indices of mineral metabolism [19].
• DESIGN: In 15 patients with COPD and 15 healthy, age-matched control subjects, FFM was determined by dual-energy X-ray absorptiometry and bioelectrical impedance analysis [20].
• PTH, bone formation, and resorption were assessed in addition to femur bone mass with use of dual-energy X-ray absorptiometry [21].
• Body composition by dual-energy x-ray absorptiometry, glucose and lipid metabolism, and IGF-I changes were also evaluated [22].

Anatomical context of Densitometry, X-Ray

• Bone mineral content (BMC,g) and areal density (BMD, g/cm2) were measured from the spine (L2-L4), femoral neck, trochanter region of the femur, and distal radius using dual-energy X-ray absorptiometry (DXA) [23].
• BMC, BMD, and bone width and estimated cortical wall thickness (CWT) were measured at five different sites in both upper extremities (proximal humerus, humeral shaft, radial shaft, ulnar shaft, and distal forearm) using dual energy x-ray absorptiometry (DXA) scanner [24].
• Bone mineral density at distal tibia using dual-energy X-ray absorptiometry in normal women and in patients with vertebral osteoporosis or primary hyperparathyroidism [25].
• Total body nitrogen was measured by IVNA, total body potassium by whole-body (40)K counting, total body water by tritium dilution, and bone mineral by dual-energy X-ray absorptiometry [26].
• Ovx increased bone marrow cell secretion of IL-1 and TNF and decreased the bone density of the distal femur, as measured by dual energy x-ray absorptiometry [27].

Associations of Densitometry, X-Ray with chemical compounds

• Using dual-energy X-ray absorptiometry (DXA) and bone histomorphometry, the current study compared the efficacy of DRO to 17 beta-estradiol (E2) in preventing OVX-induced bone loss in tibiae and femora of 19-month-old rats to determine whether DRO had similar skeletal effects as E2 in aged female rats [28].
• The recently developed techniques for the measurement of bone mineral density (BMD) of the vertebral body alone, by dual-energy x-ray absorptiometry (DXA) in the lateral projection, may be particularly useful in this context since steroid-induced bone loss is most marked in trabecular-rich regions like the vertebral body [29].
• The longitudinal effects of LY on bone were studied by dual-energy X-ray absorptiometry and biochemical markers including urinary pyridinoline (Pyr), deoxypyridinoline (Dpyr), and serum osteocalcin [30].
• Bone mineral density (BMD) at the lumbar spine (by dual-energy X-ray absorptiometry [DXA]) and markers of bone turnover (alkaline phosphatase, osteocalcin, hydroxyproline, pyridinoline cross-links) were assessed at baseline and after 1 and 2 years [31].
• Dual-energy X-ray absorptiometry of the lumbar spine decreased by 0.7% +/- 2.9% in the untreated patients and rose 0.1% +/- 4.75% in the levothyroxine-treated patients (p = NS) [32].

Gene context of Densitometry, X-Ray

• Lumbar BMD by dual-energy x-ray absorptiometry was higher in the order: hypo > cont = hyper, and radius-1/3 BMD was significantly higher in the order: hypo > cont > hyper [33].
• In adults, histomorphometric analysis showed that the absence of PRL receptors leads to a decrease in bone formation rate using double calcein labeling and a reduction of bone mineral density, measured by dual energy x-ray absorptiometry [34].
• The purpose of this study was to characterize and compare endochondral bone phenotypes and variability at central and peripheral locations of the skeleton by evaluating bone density in individuals having the same DLX3, 4 bp DEL,NT3198 mutation (OMIM 600525) and non-affected family members using dual-energy x-ray absorptiometry (DEXA) [35].
• Serum Hp was positively associated with body fat, as assessed by dual-energy x-ray absorptiometry, both in female and in male groups [36].
• As measured by dual energy x-ray absorptiometry, tail-suspension induced a progressive decrease in tibia-metaphysis bone mineral density, which was prevented by leptin [37].

Analytical, diagnostic and therapeutic context of Densitometry, X-Ray

• Thirty-three stable patients on maintenance hemodialysis were evaluated in an ambulatory clinical research center with simultaneous BIA, dual-energy x-ray absorptiometry, and deuterium oxide (D2O) and sodium bromide (NaBr) isotope dilution studies [38].
• Effects on anthropometry, body composition (by bioimpedance analysis, total body potassium, and dual energy x-ray absorptiometry), circulating lipids, glucose and insulin concentrations, cardiac 2-dimensional and Doppler echocardiography, and exercise tolerance were assessed before and after the treatment period [39].
• Subsequently, eight males (aged 15-22 yr; four adults and four late pubertal) had isotopic infusions of [(13)C]leucine and (42)Ca/(44)Ca, indirect calorimetry, dual energy x-ray absorptiometry, isokinetic dynamometry, and growth factors measurements performed before and after 10 weeks of daily doses of Arimidex [40].
• Importance of estrogen on bone health in Turner syndrome: a cross-sectional and longitudinal study using dual-energy X-ray absorptiometry [41].
• Diet, weight, height, skinfold thicknesses, percentage of body fat (dual-energy X-ray absorptiometry), insulin-like growth factor I, and serum urea nitrogen were determined [42].

References