title: Bone densitometry using computed tomography. Part I: selective determination of trabecular bone density and other bone mineral parameters. Normal values in children and adults.
abstract: Gamma-ray computed tomography (gamma-ray CT), using a special purpose scanner, enables in-vivo quantitative analysis of bone mineralization. Trabecular bone density (TBD), the relative amount of compact bone (bone density, BD) and the total absorption (TA) for a cross-section of the radius are determined from measurements of local linear absorption coefficients. A preliminary study of normal children (n = 49) and adults (n = 34) indicated that TBD is independent of age and sex in the age range 4 to 40 years. DB remains constant throughout childhood but increases after puberty in both women and men. TA is higher for adults than for children, and also higher for men than for women. A correlation between TA and parameters relating to body size indicates a relationship between body weight and bone mass.
mesh_terms: D000293:Adolescent; D000328:Adult; D001824:Body Constitution; D001846:Bone Development; D001842:Bone and Bones / Q000032:analysis / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D003720:Densitometry / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals / Q000032:analysis; D012016:Reference Values; D012044:Regression Analysis; D014057:Tomography, X-Ray Computed
chemical_list: D008903:Minerals