Show simple item record

dc.contributor.authorHauge, Ingrid Helen Ryste
dc.contributor.authorBeecher, Donal
dc.contributor.authorEllermann, Anne
dc.contributor.authorHughan, Sophi
dc.contributor.authorNguyen, Thi
dc.contributor.authorParrone, Luca
dc.contributor.authorSelboe, Silje
dc.contributor.authorSoares, Flavio augusto
dc.contributor.authorVan Wijngaarden, Stephan
dc.contributor.authorSanderud, Audun
dc.date.accessioned2017-04-24T13:18:05Z
dc.date.accessioned2017-04-25T08:59:12Z
dc.date.available2017-04-24T13:18:05Z
dc.date.available2017-04-25T08:59:12Z
dc.date.issued2017
dc.identifier.citationHauge IHR, Beecher D, Ellermann A, Hughan S, Nguyen T, Parrone L, Selboe S, Soares Fa, Van Wijngaarden S, Sanderud A: The Influence of Source-to-Image Distance on Effective Dose and Image Quality for Mobile Chest X-ray Imaging. In: Hogg P, Hogg-Thompson, Buissink C. OPTIMAX 2016Optimising image quality for medical imaging, 2017. University of Salford p. 83-92language
dc.identifier.isbn978-1-907842-93-1
dc.identifier.urihttps://hdl.handle.net/10642/4777
dc.description.abstractAim: To investigate the effect of source-to-image distance (SID) on effective dose and image quality at a fixed mAs. Furthermore, to determine whether effective dose varies as SID is varied after compensating mAs for the inverse square law. Method: A chest phantom with a simulated pathology was imaged at varying SIDs at a fixed mAs and kV. Observers visually compared the experimental images with a reference image using criteria divided into 3 categories: anatomy, noise and nodule image quality. A 2AFC program was used to display the images. A 5-point Likert scale was used ranging from ‘much worse’ to ‘much better’. PCXMC 2.0 84 was used to estimate effective dose. At each SID, a new mAs was calculated using inverse square law correction. Effective dose was estimated again. Results: Modal response for 2AFC visual evaluation of anatomy image quality was ‘equal’ for every SID, implying no observable change. Modal response for 2AFC visual evaluation of noise changed from ‘better’ to ‘worse’ as SID increased. Modal response for visual evaluation of nodule image quality was ‘worse’ at the smallest SIDs and ‘better’ at the largest SIDs. Decreasing SID from 190-100 cm: increased effective dose by 247%; compensating mAs reduced the effective dose by 36%. Conclusion: For variable SIDs used in this study, there is little perceived difference in anatomical image quality. Nodule image quality may decrease at shorter SIDs while effective dose increases. Therefore, when shorter SIDs are necessary due to lack of space, practitioners must be aware of patient dose.language
dc.language.isoenlanguage
dc.publisherUniversity of Salfordlanguage
dc.rightsAvailable under License Creative Commons Attribution Non-commercial Share Alike 4.0.language
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.titleThe Influence of Source-to-Image Distance on Effective Dose and Image Quality for Mobile Chest X-ray Imaginglanguage
dc.typeChapterlanguage
dc.typePeer reviewedlanguage
dc.date.updated2017-04-24T13:18:05Z
dc.description.versionpublishedVersionlanguage
dc.identifier.cristin1466279
dc.source.isbn978-1-907842-93-1


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Available under License Creative Commons Attribution Non-commercial Share Alike 4.0.
Except where otherwise noted, this item's license is described as Available under License Creative Commons Attribution Non-commercial Share Alike 4.0.