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Although dual-energy X-ray absorptiometry (DXA) offers an effective measurement of bone mineral density, it only provides a 2-D projected measurement of the bone mineral density. Clinical computed tomography (CT) imaging will have to be employed for measurement of 3-D bone mineral density. The typical dual energy process requires precise measurement of the beam spectral intensity at the 80 kVp and...
The continuously wider use of composite materials (CM) in various sectors of human activities imposes the growth of new methods and the construction of new appliances in order to study their physical and chemical attributes, such as density and effective atomic number, especially in a dynamic way (in situ) in high temperatures. In this paper, an automated system for the registration of density change...
This paper describes about the determination of concentration of a solid component of different pulps and slurries, which is an important problem in chemical industry, oil extraction, hydrotransportation, etc. A method of solid component determining in binary systems (solid+liquid) by means of measuring the mean value of a pulp density with the use of gamma- densitometers that operate in a "narrow"...
Left ventricular volume was assessed densitometrically by means of the mean logarithm of grey level (MLG) of a constant region of interest which included the ventricle silhouette. Stroke volume was obtained from MLG different between diastole and systole, without injection of contrast material. The results were significantly lower than those obtained by area-length method. Ejection fraction was derived...
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