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Differences in osteoporotic hip fracture incidence between American whites and blacks and between women and men are considered to result, in part, from differences in bone mineral density and geometry at the femur. The aim of this study was to quantify differences in femoral bone density and geometry between a large sample of healthy American white and black women and men.Healthy American white (n=612)...
A patient's bone status is commonly assessed by radiologic methods. Although the desired information concentrates on the probability of future fractures, the radiologic density is widely used as a surrogate for bone strength. There have been attempts to develop new parameters that have a closer relationship with bone strength, but the investigators tend to use a linear relationship between measured...
An instrument is demonstrated whereby radiographic images of a sample's electron density are compiled from the information encoded in the energy spectra of gamma rays backscattered from one side of the sample. It is assumed that access is restricted to only one surface of the object under inspection. Use of energy coding allows imaging in a fan beam rather than independent interrogation of individual...
The OsteoQuant is a computed tomography scanner for the quantitative assessment of bone density. The scanner incorporates three movements, driven by stepping motors. All movements allow synchronization with data collection to guarantee exact relationship of measurement location, measurement interval, and interval duration. The hardware used to generate the necessary timing pulses to motors and detectors...
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