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Long-term in-vitro precision of direct digital X-ray radiogrammetry

Dhainaut, Alvilde; Hoff, Mari; Kalvesten, Johan; Lydersen, Stian; Forslind, Kristina LU and Haugeberg, Glenn (2011) In Skeletal Radiology 40(12). p.1575-1579
Abstract
Digital X-ray radiogrammetry (DXR) calculates peripheral bone mineral density (BMD) from hand radiographs. The short-term precision for direct DXR has been reported to be highly satisfactory. However, long-term precision for this method has not been examined. Thus, the aim of this study was to examine the long-term in-vitro precision for the new direct digital version of DXR. The in-vitro precision for direct DXR was tested with cadaver phantoms on four different X-ray systems at baseline, 3 months, 6 months, and in one machine also at 12 months. At each time point, 31 measurements were performed. The in-vitro longitudinal precision for the four radiographic systems ranged from 0.22 to 0.43% expressed as coefficient of variation (CV%). The... (More)
Digital X-ray radiogrammetry (DXR) calculates peripheral bone mineral density (BMD) from hand radiographs. The short-term precision for direct DXR has been reported to be highly satisfactory. However, long-term precision for this method has not been examined. Thus, the aim of this study was to examine the long-term in-vitro precision for the new direct digital version of DXR. The in-vitro precision for direct DXR was tested with cadaver phantoms on four different X-ray systems at baseline, 3 months, 6 months, and in one machine also at 12 months. At each time point, 31 measurements were performed. The in-vitro longitudinal precision for the four radiographic systems ranged from 0.22 to 0.43% expressed as coefficient of variation (CV%). The smallest detectable difference (SDD) ranged from 0.0034 to 0.0054 g/cm(2). The in vitro long-term precision for direct DXR was comparable to the previous reported short-term in-vitro precision for all tested X-ray systems. These data show that DXR is a stable method for detecting small changes in bone density during 6-12 months of follow-up. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Digital X-ray radiogrammetry, Precision, Rheumatoid arthritis, Osteoporosis, Bone mineral density
in
Skeletal Radiology
volume
40
issue
12
pages
1575 - 1579
publisher
Springer
external identifiers
  • wos:000296067100010
  • scopus:80755190109
ISSN
1432-2161
DOI
10.1007/s00256-011-1187-2
language
English
LU publication?
yes
id
6a3e120d-fd52-4378-a694-b567af656781 (old id 2208117)
date added to LUP
2011-11-30 09:13:31
date last changed
2017-05-21 03:54:37
@article{6a3e120d-fd52-4378-a694-b567af656781,
  abstract     = {Digital X-ray radiogrammetry (DXR) calculates peripheral bone mineral density (BMD) from hand radiographs. The short-term precision for direct DXR has been reported to be highly satisfactory. However, long-term precision for this method has not been examined. Thus, the aim of this study was to examine the long-term in-vitro precision for the new direct digital version of DXR. The in-vitro precision for direct DXR was tested with cadaver phantoms on four different X-ray systems at baseline, 3 months, 6 months, and in one machine also at 12 months. At each time point, 31 measurements were performed. The in-vitro longitudinal precision for the four radiographic systems ranged from 0.22 to 0.43% expressed as coefficient of variation (CV%). The smallest detectable difference (SDD) ranged from 0.0034 to 0.0054 g/cm(2). The in vitro long-term precision for direct DXR was comparable to the previous reported short-term in-vitro precision for all tested X-ray systems. These data show that DXR is a stable method for detecting small changes in bone density during 6-12 months of follow-up.},
  author       = {Dhainaut, Alvilde and Hoff, Mari and Kalvesten, Johan and Lydersen, Stian and Forslind, Kristina and Haugeberg, Glenn},
  issn         = {1432-2161},
  keyword      = {Digital X-ray radiogrammetry,Precision,Rheumatoid arthritis,Osteoporosis,Bone mineral density},
  language     = {eng},
  number       = {12},
  pages        = {1575--1579},
  publisher    = {Springer},
  series       = {Skeletal Radiology},
  title        = {Long-term in-vitro precision of direct digital X-ray radiogrammetry},
  url          = {http://dx.doi.org/10.1007/s00256-011-1187-2},
  volume       = {40},
  year         = {2011},
}