Repository logo
 
Publication

Development and validation of a psychometric scale for assessing PA chest image quality: a pilot study

2014-04Journal article Restricted access
Simple item page
dc.contributor.authorMraity, H.
dc.contributor.authorEngland, A.
dc.contributor.authorAkhtar, I.
dc.contributor.authorAslam, A.
dc.contributor.authorDe Lange, R.
dc.contributor.authorMomoniat, H.
dc.contributor.authorNicoulaz, S.
dc.contributor.authorRibeiro, A.
dc.contributor.authorMazhir, S.
dc.contributor.authorHogg, Peter
dc.date.accessioned2014-08-07T15:54:01Z
dc.date.available2014-08-07T15:54:01Z
dc.date.issued2014-04
dc.description.abstractPurpose - To develop and validate a psychometric scale for assessing image quality perception for chest X-ray images. Methods - Bandura's theory was used to guide scale development. A review of the literature was undertaken to identify items/factors which could be used to evaluate image quality using a perceptual approach. A draft scale was then created (22 items) and presented to a focus group (student and qualified radiographers). Within the focus group the draft scale was discussed and modified. A series of seven postero-anterior chest images were generated using a phantom with a range of image qualities. Image quality perception was confirmed for the seven images using signal-to-noise ratio (SNR 17.2–36.5). Participants (student and qualified radiographers and radiology trainees) were then invited to independently score each of the seven images using the draft image quality perception scale. Cronbach alpha was used to test interval reliability. Results - Fifty three participants used the scale to grade image quality perception on each of the seven images. Aggregated mean scale score increased with increasing SNR from 42.1 to 87.7 (r = 0.98, P < 0.001). For each of the 22 individual scale items there was clear differentiation of low, mid and high quality images. A Cronbach alpha coefficient of >0.7 was obtained across each of the seven images. Conclusion - This study represents the first development of a chest image quality perception scale based on Bandura's theory. There was excellent correlation between the image quality perception scores derived using the scale and the SNR. Further research will involve a more detailed item and factor analysis.por
dc.identifier.citationMraitya H, England A, Akhtar I, Aslam A, De Lange R, Momoniat H, et al. Development and validation of a psychometric scale for assessing PA chest image quality: a pilot study. Radiography. 2014:1-6. [Epub ahead of print]por
dc.identifier.doi10.1016/j.radi.2014.03.007
dc.identifier.urihttp://hdl.handle.net/10400.21/3738
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1078817414000388por
dc.subjectRadiologypor
dc.subjectChest radiographypor
dc.subjectImage quality perceptionpor
dc.subjectAssessment scalepor
dc.titleDevelopment and validation of a psychometric scale for assessing PA chest image quality: a pilot studypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage6por
oaire.citation.startPage1por
oaire.citation.titleRadiographypor
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Development and validation of a psychometric scale for assessing PA chest image quality.pdf
Size:
682.32 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ESTeSL - Artigos