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A software tool for increased efficiency in observer performance studies in radiology

Borjesson, S; Hakansson, M; Bath, M; Kheddache, S; Svensson, S; Tingberg, Anders LU ; Grahn, Anna LU ; Ruschin, Mark LU ; Hemdal, Bengt LU and Mattsson, Sören LU , et al. (2005) In Radiation Protection Dosimetry 114(1-3). p.45-52
Abstract
Observer performance studies are time-consurning tasks, both for the participating observers and for the scientists collecting and analysing the data. A possible way to optimise such studies is to perform them in a completely digital environment. A software tool-ViewDEX (Viewer for Digital Evaluation of X-ray images)-has been developed in Java, enabling it to function on almost any computer. ViewDEX is designed to handle several types of studies, such as visual grading analysis (VGA), image criteria scoring (ICS) and receiver operating characteristics (ROC). The results from each observer are saved in a log file, which can be exported for further analysis in, for example, a special software for analysing ROC results. By using ViewDEX for... (More)
Observer performance studies are time-consurning tasks, both for the participating observers and for the scientists collecting and analysing the data. A possible way to optimise such studies is to perform them in a completely digital environment. A software tool-ViewDEX (Viewer for Digital Evaluation of X-ray images)-has been developed in Java, enabling it to function on almost any computer. ViewDEX is designed to handle several types of studies, such as visual grading analysis (VGA), image criteria scoring (ICS) and receiver operating characteristics (ROC). The results from each observer are saved in a log file, which can be exported for further analysis in, for example, a special software for analysing ROC results. By using ViewDEX for an ROC experiment, an evaluation rate of similar to 200 images per hour can be achieved, compared to similar to 25 images per hour using hard copy evaluation. The results are obtained within minutes of completion of the viewing. The risk of human errors in the process of data collection and analysis is also minimised. The viewer has been used in a major trial containing similar to 2700 images. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation Protection Dosimetry
volume
114
issue
1-3
pages
45 - 52
publisher
Nuclear Technology Publishing
external identifiers
  • pmid:15933080
  • wos:000229927400007
  • scopus:21244499800
ISSN
1742-3406
DOI
10.1093/rpd/nch550
language
English
LU publication?
yes
id
22f1da36-0a3a-4eaf-a340-1ab94f5f8640 (old id 895181)
date added to LUP
2008-01-11 12:12:53
date last changed
2017-11-05 04:23:41
@article{22f1da36-0a3a-4eaf-a340-1ab94f5f8640,
  abstract     = {Observer performance studies are time-consurning tasks, both for the participating observers and for the scientists collecting and analysing the data. A possible way to optimise such studies is to perform them in a completely digital environment. A software tool-ViewDEX (Viewer for Digital Evaluation of X-ray images)-has been developed in Java, enabling it to function on almost any computer. ViewDEX is designed to handle several types of studies, such as visual grading analysis (VGA), image criteria scoring (ICS) and receiver operating characteristics (ROC). The results from each observer are saved in a log file, which can be exported for further analysis in, for example, a special software for analysing ROC results. By using ViewDEX for an ROC experiment, an evaluation rate of similar to 200 images per hour can be achieved, compared to similar to 25 images per hour using hard copy evaluation. The results are obtained within minutes of completion of the viewing. The risk of human errors in the process of data collection and analysis is also minimised. The viewer has been used in a major trial containing similar to 2700 images.},
  author       = {Borjesson, S and Hakansson, M and Bath, M and Kheddache, S and Svensson, S and Tingberg, Anders and Grahn, Anna and Ruschin, Mark and Hemdal, Bengt and Mattsson, Sören and Mansson, LG},
  issn         = {1742-3406},
  language     = {eng},
  number       = {1-3},
  pages        = {45--52},
  publisher    = {Nuclear Technology Publishing},
  series       = {Radiation Protection Dosimetry},
  title        = {A software tool for increased efficiency in observer performance studies in radiology},
  url          = {http://dx.doi.org/10.1093/rpd/nch550},
  volume       = {114},
  year         = {2005},
}