title: In vivo analysis of single, pre- and postprocessing quantitative CT techniques.
abstract: Measurements of bone mineral using single and dual-energy quantitative computed tomography (CT) are examined in vivo in 108 vertebral bodies scanned on a Siemens DRH scanner. Pre and postprocessing dual-energy techniques are compared. In the range of clinically useful kilovoltage, the choice of beam energy does not make a significant difference to the single-energy bone mineral measurement. Postprocessing dual-energy measurement in vivo shows a statistically significant decrease in the amount of mineral measured compared to single-energy measurements, whereas the preprocessing measurement shows a significant increase.
authors.affiliation: From the Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis, Missouri 63110.
authors.forename: W R
authors.initials: WR
authors.lastname: Reinus
authors.forename: D C
authors.initials: DC
authors.lastname: Hardy
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008875:Middle Aged; D008903:Minerals / Q000032:analysis*; D008961:Models, Structural; D013131:Spine / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D008903:Minerals