Detectability of normal anatomy in digital panoramic radiographs

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Detectability of normal anatomy in digital panoramic radiographs

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dc.contributor.author Gross, Heidi
dc.contributor.author Nilsson, Mats
dc.contributor.author Hellén-Halme, Kristina
dc.date.accessioned 2016-04-07T13:48:25Z
dc.date.available 2016-04-07T13:48:25Z
dc.date.issued 2014 en_US
dc.identifier.citation 179-85 en_US
dc.identifier.issn 0347-9994 en_US
dc.identifier.uri http://hdl.handle.net/2043/20487
dc.description.abstract The aim of this study was to evaluate the image quality of digital panoramic radiographs and its correlation with the detectability of normal anatomical structures. The effects of image enhancement on the detectability were also studied. A total of 500 panoramic images (DICOM format) obtained with a storage phosphor-based digital system were evaluated. The image quality and the detectability of selected normal anatomical structures were evaluated in all images. Images with inadequate image quality were subjected to enhancement after which the detectability of the structures was re-evaluated. Only 9% of the images were classified as having adequate technical quality. The main sources of poor image quality were that the patient's tongue was not held against the palate and incorrect positioning of the patient. Not holding the tongue against the palate was found to have a negative impact on the detectability of maxillary structures. Of the images with horizontal positioning errors the patient's head was rotated to the left in 81% (70 images). The most effective form of enhancement was a combination of increased contrast and decreased brightness. Images in which the tongue was not held against the palate were partially improved, whereas images with positioning errors remained unaffected by this enhancement. In conclusion, most of the panoramic images showed some technical flaws. The marginal bone level and the maxillary area were the most difficult areas to reproduce. Retakes could be avoided in some cases by using image enhancement. However, this should not be regarded as an option to avoid poor image quality. en_US
dc.language.iso eng en_US
dc.publisher Swedish Dental Federation en_US
dc.subject.classification Medicine en_US
dc.title Detectability of normal anatomy in digital panoramic radiographs en_US
dc.type Article, peer reviewed scientific en_US
dc.contributor.department Malmö University. Faculty of Odontology
dc.subject.srsc Research Subject Categories::ODONTOLOGY en_US
dc.relation.ispartofpublication Swedish Dental Journal;4
dc.relation.ispartofpublicationvolume 38 en_US
dc.description.authorversion No en_US
dc.identifier.pmid 25771652
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