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Proceedings Paper

In-vivo measurement of phosphorus in bones of the hands: ten years of clinical experience
Author(s): John A. Kalef-Ezra; Ioannis Hatzikonstantinou; Dimitrios C. Glaros; Seiichi Yasumura
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Paper Abstract

A facility was constructed for the in vivo measurement of phosphorus in the bones of the human hands. The technique is based on the detection of the delayed (gamma) -rays emitted from 28Al produced via the 31P(n,(alpha) )28Al reaction. The 4-min irradiation by two 241Am-Be sources is followed by a 4-min counting of the induced activity with two Nal(Tl) detectors. The long-term in vivo precision of the measurements was found to be 2.8 percent and the effective dose is 50 (mu) Sv. To date, well over 1000 measurements have been carried out. The amount of phosphorus in hands in healthy adults was correlated with sex, age, height, forearm bone mineral content, bone mineral density in the spine, total body fat free mass and total body cell mass. Moreover, the measurement of phosphorus in the bones of the hands of patients provided answers to a number of clinical problems.

Paper Details

Date Published: 27 February 1997
PDF: 4 pages
Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); doi: 10.1117/12.267935
Show Author Affiliations
John A. Kalef-Ezra, Univ. of Ioannina (Greece)
Ioannis Hatzikonstantinou, Univ. of Ioannina (Greece)
Dimitrios C. Glaros, Univ. of Ioannina (Greece)
Seiichi Yasumura, Brookhaven National Lab. (United States)


Published in SPIE Proceedings Vol. 2867:
International Conference Neutrons in Research and Industry
George Vourvopoulos, Editor(s)

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