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Are digital images good enough? A comparative study of conventional film-screen vs digital radiographs on printed images of total hip replacement.

Eklund, K.; Jonsson, Kjell LU ; Lindblom, G.; Lundin, Björn LU ; Sanfridsson, J.; Sloth, M. and Sivberg, Bengt LU (2004) In European Radiology 14(5). p.865-869
Abstract
The aim of this study was to evaluate the inter- and intra-observer variability and to find differences in diagnostic safety between digital and analog technique in diagnostic zones around hip prostheses. In 80 patients who had had a total hip replacement (THR) for more than 2 years, a conventional image and a digital image were taken. Gruen's model of seven distinct regions of interest was used for evaluations. Five experienced radiologists observed the seven regions and noted in a protocol the following distances: stem-cement; cement-bone; and stem-bone. All images were printed on hard copies and were read twice. Weighted kappa, kappa(w), analyses were used. The two most frequently loosening regions, stem-cement region 1 and cement-bone... (More)
The aim of this study was to evaluate the inter- and intra-observer variability and to find differences in diagnostic safety between digital and analog technique in diagnostic zones around hip prostheses. In 80 patients who had had a total hip replacement (THR) for more than 2 years, a conventional image and a digital image were taken. Gruen's model of seven distinct regions of interest was used for evaluations. Five experienced radiologists observed the seven regions and noted in a protocol the following distances: stem-cement; cement-bone; and stem-bone. All images were printed on hard copies and were read twice. Weighted kappa, kappa(w), analyses were used. The two most frequently loosening regions, stem-cement region 1 and cement-bone region 7, were closely analyzed. In region 1 the five observers had an agreement of 86.75-97.92% between analog and digital images in stem-cement, which is a varied kappa(w) 0.29-0.71. For cement-bone region 7 an agreement of 87.21-90.45% was found, which is a varied kappa(w) of 0.48-0.58. All the kappa values differ significantly from nil. The result shows that digital technique is as good as analog radiographs for diagnosing possible loosening of hip prostheses. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
comparative study, total hip replacement, digital radiographs, analog radiographs
in
European Radiology
volume
14
issue
5
pages
865 - 869
publisher
Springer
external identifiers
  • pmid:14618365
  • wos:000220880400016
  • scopus:2542452919
ISSN
0938-7994
DOI
10.1007/s00330-003-2126-y
language
English
LU publication?
yes
id
16906a56-500b-480c-85e9-221a6a851411 (old id 118912)
alternative location
http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=14618365&dopt=Abstract
date added to LUP
2007-07-18 13:30:56
date last changed
2017-01-01 04:28:46
@article{16906a56-500b-480c-85e9-221a6a851411,
  abstract     = {The aim of this study was to evaluate the inter- and intra-observer variability and to find differences in diagnostic safety between digital and analog technique in diagnostic zones around hip prostheses. In 80 patients who had had a total hip replacement (THR) for more than 2 years, a conventional image and a digital image were taken. Gruen's model of seven distinct regions of interest was used for evaluations. Five experienced radiologists observed the seven regions and noted in a protocol the following distances: stem-cement; cement-bone; and stem-bone. All images were printed on hard copies and were read twice. Weighted kappa, kappa(w), analyses were used. The two most frequently loosening regions, stem-cement region 1 and cement-bone region 7, were closely analyzed. In region 1 the five observers had an agreement of 86.75-97.92% between analog and digital images in stem-cement, which is a varied kappa(w) 0.29-0.71. For cement-bone region 7 an agreement of 87.21-90.45% was found, which is a varied kappa(w) of 0.48-0.58. All the kappa values differ significantly from nil. The result shows that digital technique is as good as analog radiographs for diagnosing possible loosening of hip prostheses.},
  author       = {Eklund, K. and Jonsson, Kjell and Lindblom, G. and Lundin, Björn and Sanfridsson, J. and Sloth, M. and Sivberg, Bengt},
  issn         = {0938-7994},
  keyword      = {comparative study,total hip replacement,digital radiographs,analog radiographs},
  language     = {eng},
  number       = {5},
  pages        = {865--869},
  publisher    = {Springer},
  series       = {European Radiology},
  title        = {Are digital images good enough? A comparative study of conventional film-screen vs digital radiographs on printed images of total hip replacement.},
  url          = {http://dx.doi.org/10.1007/s00330-003-2126-y},
  volume       = {14},
  year         = {2004},
}