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Compton scatter densitometry in bone: influence of the anatomical site

Koligliatis, T; Kalef-Ezra, J; Speller, RD; Mooney, MJ; Litsas, J; (1998) Compton scatter densitometry in bone: influence of the anatomical site. PHYS MEDICA , 14 (2) 73 - 78.

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Abstract

The intensity of the singly scattered photons in a particular direction provides a means of deducing electron density of tissues. A number of investigators proposed the in vivo application of Compton scatter densitometry (CSD) for the assessment of bone mineral status. The aim of the present study was to recognise the anatomical sites most likely to provide clinical benefit. The following criteria were used to compare CSD density measurements with those carried out with competitive techniques: precision, sensitivity, measurement time, and radiological burden. Applying Monte Carlo techniques, photons were traced in cylindrical phantoms, as well as in phantoms that simulate the lumbar spine, the femoral neck, the 1/3 and 1/10 of the length of the distal forearm, and the mid-shaft of the tibia sites. The applicability of the technique either in the spine or in the femoral neck is limited by the required radiological burden and irradiation time. The latter is the main limiting factor even in the appendicular skeletal sites.

Type: Article
Title: Compton scatter densitometry in bone: influence of the anatomical site
Keywords: Compton scatter, bone density, bone minerals, x-rays, QUANTITATIVE COMPUTED-TOMOGRAPHY, MULTIPLE SCATTER, PHOTON SCATTERING, DENSITY, OSTEOPOROSIS, SYSTEM, INDEX
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/59988
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