background: the aim of the present study was to evaluate the relationship between the bone density of various regions of jaws and skeletal bones. materials and methods: a total of 110 patients with a mean age of 55.01 ± 10.77 years were selected for the purpose of the present descriptive study. dual x-ray energy absorptiometry (dxa) was carried out to determine bone mineral density (bmd) of the...

The aim of this research is to determine the possible solar energy storage in the norbornadiene (1) / quadricyclane (2) system, through involving steric effects on various position of carbon C1, C2 or C7 for 1 and 2; calculating the corresponding energies at B3LYP/6-311G** level of theory. The extent of the solar energy storage is the least for 11-i-Pr (-21.018), 12-t-Bu (-22.525) and 17-i-Pr (...

Single energy computed tomography (CT) scanners use measurements of densities to detect explosives in luggage. It is desirable to apply dual energy techniques to these CT scanners to obtain atomic number measurements to reduce false alarm rates. However, the direct application of existing dual energy techniques has practical problems, such as, approximation errors and lack of boundary constrain...

48 CMAJ, January 7, 2014, 186(1) © 2014 Canadian Medical Association or its licensors Two patients with grade III obesity (body mass index [BMI] ≥ 40), a 31-year-old man (A) and a 26-year-old woman (B), underwent Roux-en-Y gastric bypass on vertical banded gastroplasty. Both patients followed the same nutritional and postsurgical approach. After 12 months, both patients achieved a similar reduc...

Osteoporosis is a multifactorial disease characterized by a decrease in bone mass and deterioration of bone architecture. Genetic factors are determinants of peak bone mass and may influence age-related decreases of bone mass. WHO has established an operational criterion based on bone density measuring, the T-score. 122 cases were studied, 51 diagnosed with primary osteoporosis. Mean age was 57...

This article reviews the dual-energy x-ray absorptiometry (DXA) technique, its interpretation, and clinical applications with emphasis on the considerations unique to pediatrics. Specifically, the use of DXA in children requires the radiologist to be a “clinical pathologist,” monitoring the technical aspects of the DXA acquisition, a “statistician” knowledgeable in the concepts of Z-scores and ...

The applications of Dual-energy X-ray Absorptiometry (DXA) to vertebrate research and veterinary practice are many. DXA has been used successfully to rapidly and non-invasively quantify bone density and body composition in a variety of animals. The use of DXA has been limited, primarily, to basic and applied research, but DXA technology has great promise for clinical practice involving animals....

Chiyoko Usui1,2, Motoko Taguchi3, Kazuko Ishikawa-Takata4 and Mitsuru Higuchi5 1Department of Health Promotion and Exercise, National Institute of Health and Nutrition, 2Research Fellow of the Japan Society for the Promotion of Science, 3Japan Women’s College of Physical Education, 4Department of Nutritional Education, National Institute of Health and Nutrition, 5Faculty of Sport Sciences, Wase...