Citation
A. Pietrobelli et al., LEAN R-VALUE FOR DXA 2-COMPONENT SOFT-TISSUE MODEL - INFLUENCE OF AGEAND TISSUE OR ORGAN TYPE, Applied radiation and isotopes, 49(5-6), 1998, pp. 743-744
Citations number
6
Categorie Soggetti
Nuclear Sciences & Tecnology","Radiology,Nuclear Medicine & Medical Imaging","Chemistry Inorganic & Nuclear
Journal title
Applied radiation and isotopes
ISSN journal
09698043
→ ACNP
Volume
49
Issue
5-6
Year of publication
1998
Pages
743 - 744
Database
ISI
SICI code
0969-8043(1998)49:5-6<743:LRFD2S>2.0.ZU;2-J
Abstract
Dual-energy X-ray absorptiometry (DXA) is an important new body compos
ition method that is based on tissue attenuation of two main photon en
ergies. When the two photon energies pass through tissue, attenuation
at the lower energy competed with that at the higher energy can expres
sed as a ratio (R), which is used for tissue component identification.
We tested whether: (1) the R value of lean tissue is related to age,
and (2) the R value of lean tissue differs between soft tissue locatio
ns. Elemental content of various tissues from the literature was used.
Results show that lean R values for 40 keV and 70 keV are independent
of age and tissue type. (C) 1998 Elsevier Science Ltd. All rights res
erved.