The determination of bone density by radiation absorption

1974 ◽  
Vol 15 (1) ◽  
pp. 189-199 ◽  
Author(s):  
N. J. Siemon ◽  
E. W. Moodie ◽  
D. F. Robertson
Keyword(s):  
Bone Density ◽  
Radiation Absorption

scholarly journals 1,3,4-Thiadiazole-Containing Azo Dyes: Synthesis, Spectroscopic Properties and Molecular Structure

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2822
Author(s):  
Agnieszka Kudelko ◽  
Monika Olesiejuk ◽  
Marcin Luczynski ◽  
Marcin Swiatkowski ◽  
Tomasz Sieranski ◽  
...  
Keyword(s):  
Azo Dyes ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Spectroscopic Properties ◽  
Radiation Absorption ◽  
Functional Theory ◽  
Chemical Structures ◽  
Vis Spectroscopy ◽  
High Yields

Three series of azo dyes derived from 2-amino-5-aryl-1,3,4-thiadiazoles and aniline, N,N-dimethylaniline and phenol were synthesized in high yields by a conventional diazotization-coupling sequence. The chemical structures of the prepared compounds were confirmed by 1H-NMR, 13C-NMR, IR, UV-Vis spectroscopy, mass spectrometry and elemental analysis. In addition, the X-ray single crystal structure of a representative azo dye was presented. For explicit determination of the influence of a substituent on radiation absorption in UV-Vis range, time-dependent density functional theory calculations were performed.

A method for determination of relative bone density in implantology

2019 ◽  
Author(s):  
D. Hyka-Xhako ◽  
N. Hyka ◽  
J. Jani
Keyword(s):  
Bone Density

Effect of increased hydration and removal of bone fat on a method for determination of bone density

2009 ◽  
Vol 7 (2) ◽  
pp. 247-248 ◽  
Author(s):  
Michael J. Keenan ◽  
Maren Hegsted ◽  
Andrea M. Reisenauer ◽  
Terry L. Ward ◽  
L. Lee Southern
Keyword(s):  
Bone Density

Determination of cancellous bone density using low frequency acoustic measurements

2008 ◽  
Vol 87 (10-11) ◽  
pp. 1213-1225 ◽  
Author(s):  
Robert P. Gilbert ◽  
Philippe Guyenne ◽  
George C. Hsiao
Keyword(s):  
Bone Density ◽  
Cancellous Bone ◽  
Low Frequency ◽  
Acoustic Measurements

In vivo Determination of Bone Density â€" A Comparative Study

1977 ◽  
Vol 16 (1) ◽  
Author(s):  
Norbert E. Reich ◽  
Frank E. Seidelmann ◽  
Ray R. Tubbs ◽  
William MacIntyre
Keyword(s):  
Bone Density ◽  
Comparative Study

DuMond Spectroscopy: A Technique for the Determination of Bone Density

1993 ◽  
Vol 06 (04) ◽  
pp. 194-197
Author(s):  
K. MacKenzie ◽  
H. Dobson
Keyword(s):  
Bone Mineral Density ◽  
Bone Density ◽  
Energy Distribution ◽  
Sodium Iodide ◽  
Repeated Measurements ◽  
Mineral Density ◽  
R Value ◽  
Sodium Iodide Detector ◽  
A New Technique

DuMond spectroscopy is a new technique for the determination of bone mineral density. The instrument consists of an Americium-241 source mounted in an absorber post located on the surface of a sodium iodide detector. The analysis is based on the energy distribution of photons scattered by the tissue. Measurements made using a series of powdered bovine cortical bone and wax mixtures gave an R value of 0.991. Repeated measurements made on a series of calcaneus specimens gave a precision of 0.96%.

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