Show simple item record

dc.contributor.authorNaimi, Salma
dc.contributor.authorTetteh, Mercy Afadzi
dc.contributor.authorAshraf, Haseem
dc.contributor.authorJohansen, Safora
dc.date.accessioned2024-08-08T07:29:10Z
dc.date.available2024-08-08T07:29:10Z
dc.date.created2024-07-02T10:15:53Z
dc.date.issued2024
dc.identifier.issn2058-4601
dc.identifier.urihttps://hdl.handle.net/11250/3145244
dc.description.abstractBackground: Lung cancer is the most common cause of cancer-related death worldwide and therefore there has been a growing demand for low-dose computed tomography (LDCT) protocols. Purpose: To investigate and evaluate the dose and image quality of patients undergoing lung cancer screening (LCS) using LDCT in Norway. Materials and Methods: Retrospective dosimetry data, volumetric CT dose index (CTDIvol) and dose-length product (DLP), from 70 average-size and 70 large-size patients who underwent LDCT scan for LCS were included in the survey. Effective dose and size-specific dose were calculated for each examination and were compared with the American Association of Physicists in Medicine (AAPM) requirement. For a quantitative image quality analysis, noise, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were determined for different regions in the chest with two iterative reconstruction techniques, iDose and Iterative Model Reconstruction. Differences in dose and image quality between average-size and large-size patients were evaluated by Independent sample t test, and Wilcoxon signed rank test within the same patient group. Results: The independent sample t test revealed significant differences (p < .05) in dose values between average-size and large-size patients. Mean CTDIvol and DLP for average-size patients were 2.8 mGy and 115 mGy.cm, respectively, with appropriate increment for the large-size patients. Image quality (image noise, SNR, and CNR) did not significantly differ between patient groups when images were reconstructed with a model based iterative reconstruction algorithm. Conclusion: The screening protocol assessed in this study resulted in CTDIvol values that were compliant with AAPM recommendation. No significant differences in objective image quality were found between patient groups.en_US
dc.language.isoengen_US
dc.publisherSAGE Publicationsen_US
dc.relation.ispartofseriesActa Radiologica Open;
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleEvaluation of an in-use chest CT protocol in lung cancer screening - A single institutional studyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doihttp://dx.doi.org/10.1177/20584601241256005
dc.identifier.cristin2280318
dc.source.journalActa Radiologica Openen_US
dc.source.volume13en_US
dc.source.issue7en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal