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Article: Image processing for enhanced observer agreement in the evaluation of periapical bone changes

TitleImage processing for enhanced observer agreement in the evaluation of periapical bone changes
Authors
Issue Date2002
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/IEJ
Citation
International Endodontic Journal, 2002, v. 35 n. 7, p. 615-622 How to Cite?
AbstractAim: The aim of the present study was to evaluate the effect of root canal treatment on periapical lesions by conventional and subtracted digital radiographic images of clinical cases. Methodology: Eleven patients who exhibited clinical or radiological signs of periapical pathology received root canal treatment. Periapical radiographs were obtained immediately postoperatively and recall radiographs at intervals of 3, 6, 9 and 12 months postoperatively were obtained. Identical exposure geometry was maintained. From the standardized radiographs digitized images were produced. Four experienced practitioners interpreted the radiographs and the digitized images. They assessed 59 pairs of images projected at random using a slide projector. On the left side, there was a reference image with no lesion, and on the right an image either with or without a lesion. Each reader was asked to rate each pair of images on a three-point scale: yes, absolutely sure that gain or loss was present; uncertain, if there was gain or loss; no, absolutely sure that no gain or loss was present. There was no time limit for each decision. Inter- and intra-examiner agreement was analyzed using the kappa-statistic for the diagnosis of periapical bone density changes in the periapical region at the different time points either in conventional pairs of radiographs or using digital subtraction images. Results: The inter-examiner agreement (P ≤ 0.001) and the intra-examiner agreement (P = 0.02) when digital pictures where evaluated were significantly higher than with conventional radiographs. Conclusions: A highly significantly better observer agreement was achieved by digital subtraction radiography during the evaluation of the outcome of root canal treatment on periapical lesions.
Persistent Identifierhttp://hdl.handle.net/10722/154204
ISSN
2015 Impact Factor: 2.842
2015 SCImago Journal Rankings: 2.020
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNicopoulouKarayianni, Ken_US
dc.contributor.authorBragger, Uen_US
dc.contributor.authorPatrikiou, Aen_US
dc.contributor.authorStassinakis, Aen_US
dc.contributor.authorLang, NPen_US
dc.date.accessioned2012-08-08T08:23:52Z-
dc.date.available2012-08-08T08:23:52Z-
dc.date.issued2002en_US
dc.identifier.citationInternational Endodontic Journal, 2002, v. 35 n. 7, p. 615-622en_US
dc.identifier.issn0143-2885en_US
dc.identifier.urihttp://hdl.handle.net/10722/154204-
dc.description.abstractAim: The aim of the present study was to evaluate the effect of root canal treatment on periapical lesions by conventional and subtracted digital radiographic images of clinical cases. Methodology: Eleven patients who exhibited clinical or radiological signs of periapical pathology received root canal treatment. Periapical radiographs were obtained immediately postoperatively and recall radiographs at intervals of 3, 6, 9 and 12 months postoperatively were obtained. Identical exposure geometry was maintained. From the standardized radiographs digitized images were produced. Four experienced practitioners interpreted the radiographs and the digitized images. They assessed 59 pairs of images projected at random using a slide projector. On the left side, there was a reference image with no lesion, and on the right an image either with or without a lesion. Each reader was asked to rate each pair of images on a three-point scale: yes, absolutely sure that gain or loss was present; uncertain, if there was gain or loss; no, absolutely sure that no gain or loss was present. There was no time limit for each decision. Inter- and intra-examiner agreement was analyzed using the kappa-statistic for the diagnosis of periapical bone density changes in the periapical region at the different time points either in conventional pairs of radiographs or using digital subtraction images. Results: The inter-examiner agreement (P ≤ 0.001) and the intra-examiner agreement (P = 0.02) when digital pictures where evaluated were significantly higher than with conventional radiographs. Conclusions: A highly significantly better observer agreement was achieved by digital subtraction radiography during the evaluation of the outcome of root canal treatment on periapical lesions.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/IEJen_US
dc.relation.ispartofInternational Endodontic Journalen_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshAlveolar Bone Loss - Etiology - Radiographyen_US
dc.subject.meshColoren_US
dc.subject.meshContrast Mediaen_US
dc.subject.meshDental Pulp Diseases - Complications - Therapyen_US
dc.subject.meshHumansen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshObserver Variationen_US
dc.subject.meshOutcome Assessment (Health Care) - Methodsen_US
dc.subject.meshRadiography, Dental, Digitalen_US
dc.subject.meshRoot Canal Therapyen_US
dc.subject.meshSubtraction Techniqueen_US
dc.titleImage processing for enhanced observer agreement in the evaluation of periapical bone changesen_US
dc.typeArticleen_US
dc.identifier.emailLang, NP:nplang@hkucc.hku.hken_US
dc.identifier.authorityLang, NP=rp00031en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1046/j.1365-2591.2002.00526.xen_US
dc.identifier.pmid12190901en_US
dc.identifier.scopuseid_2-s2.0-0036653344en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036653344&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume35en_US
dc.identifier.issue7en_US
dc.identifier.spage615en_US
dc.identifier.epage622en_US
dc.identifier.isiWOS:000176572500006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridNicopoulouKarayianni, K=6601946017en_US
dc.identifier.scopusauthoridBragger, U=7005538598en_US
dc.identifier.scopusauthoridPatrikiou, A=7003899898en_US
dc.identifier.scopusauthoridStassinakis, A=6603559913en_US
dc.identifier.scopusauthoridLang, NP=7201577367en_US

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