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Radiographers’ perspectives’ on Visual Grading Analysis as a scientific method to evaluate image quality

Precht, H. ; Hansson, J. ; Outzen, C. ; Hogg, P. and Tingberg, A. LU (2019) In Radiography 25. p.14-18
Abstract

Introduction: Radiographers routinely undertake many initiatives to balance image quality with radiation dose (optimisation). For optimisation studies to be successful image quality needs to be carefully evaluated. Purpose was to 1) discuss the strengths and limitations of a Visual Grading Analysis (VGA) method for image quality evaluation and 2) to outline the method from a radiographer's perspective. Methods: A possible method for investigating and discussing the relationship between radiographic image quality parameters and the interpretation and perception of X-ray images is the VGA method. VGA has a number of advantages such as being low cost and a detailed image quality assessment, although it is limited to ensure the images... (More)

Introduction: Radiographers routinely undertake many initiatives to balance image quality with radiation dose (optimisation). For optimisation studies to be successful image quality needs to be carefully evaluated. Purpose was to 1) discuss the strengths and limitations of a Visual Grading Analysis (VGA) method for image quality evaluation and 2) to outline the method from a radiographer's perspective. Methods: A possible method for investigating and discussing the relationship between radiographic image quality parameters and the interpretation and perception of X-ray images is the VGA method. VGA has a number of advantages such as being low cost and a detailed image quality assessment, although it is limited to ensure the images convey the relevant clinical information and relate the task based radiography. Results: Comparing the experience of using VGA and Receiver Operating Characteristic (ROC) it is obviously that less papers are published on VGA (Pubmed n=1.384) compared to ROC (Pubmed n=122.686). Hereby the scientific experience of the VGA method is limited compared to the use of ROC. VGA is, however, a much newer method and it is slowly gaining more and more attention. Conclusion: The success of VGA requires a number of steps to be completed, such as defining the VGA criteria, choosing the VGA method (absolute or relative), including observers, finding the best image display platforms, training observers and selecting the best statistical method for the study purpose should be thoroughly considered. Implication for practice: Detailed evaluation of image quality for optimisation studies related to technical definition of image quality.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Image quality assessment method, VGA, Visual Grading Analysis, Visual image quality analysis
in
Radiography
volume
25
pages
14 - 18
publisher
W.B. Saunders Ltd
external identifiers
  • pmid:31481182
  • scopus:85071708251
ISSN
1078-8174
DOI
10.1016/j.radi.2019.06.006
language
English
LU publication?
yes
id
44aaa1a3-22ca-4566-b09e-5ecf338e9add
date added to LUP
2019-09-16 13:31:06
date last changed
2019-12-03 02:18:49
@article{44aaa1a3-22ca-4566-b09e-5ecf338e9add,
  abstract     = {<p>Introduction: Radiographers routinely undertake many initiatives to balance image quality with radiation dose (optimisation). For optimisation studies to be successful image quality needs to be carefully evaluated. Purpose was to 1) discuss the strengths and limitations of a Visual Grading Analysis (VGA) method for image quality evaluation and 2) to outline the method from a radiographer's perspective. Methods: A possible method for investigating and discussing the relationship between radiographic image quality parameters and the interpretation and perception of X-ray images is the VGA method. VGA has a number of advantages such as being low cost and a detailed image quality assessment, although it is limited to ensure the images convey the relevant clinical information and relate the task based radiography. Results: Comparing the experience of using VGA and Receiver Operating Characteristic (ROC) it is obviously that less papers are published on VGA (Pubmed n=1.384) compared to ROC (Pubmed n=122.686). Hereby the scientific experience of the VGA method is limited compared to the use of ROC. VGA is, however, a much newer method and it is slowly gaining more and more attention. Conclusion: The success of VGA requires a number of steps to be completed, such as defining the VGA criteria, choosing the VGA method (absolute or relative), including observers, finding the best image display platforms, training observers and selecting the best statistical method for the study purpose should be thoroughly considered. Implication for practice: Detailed evaluation of image quality for optimisation studies related to technical definition of image quality.</p>},
  author       = {Precht, H. and Hansson, J. and Outzen, C. and Hogg, P. and Tingberg, A.},
  issn         = {1078-8174},
  language     = {eng},
  pages        = {14--18},
  publisher    = {W.B. Saunders Ltd},
  series       = {Radiography},
  title        = {Radiographers’ perspectives’ on Visual Grading Analysis as a scientific method to evaluate image quality},
  url          = {http://dx.doi.org/10.1016/j.radi.2019.06.006},
  doi          = {10.1016/j.radi.2019.06.006},
  volume       = {25},
  year         = {2019},
}