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Article: An analysis of patient dose received during cone-beam computed tomography in relation to scan settings and imaging indications as seen in a dental institution in order to establish institutional diagnostic reference levels

TitleAn analysis of patient dose received during cone-beam computed tomography in relation to scan settings and imaging indications as seen in a dental institution in order to establish institutional diagnostic reference levels
Authors
KeywordsCone-beam computed tomography
diagnostic reference level
dose optimisation
low-dose protocol
radiation monitoring
Issue Date2022
Citation
Dentomaxillofacial Radiology, 2022, v. 51, n. 5, article no. 20200529 How to Cite?
AbstractObjectives: To investigate the dose-area product (DAP) of cone-beam computed tomography (CBCT) examinations for different scan settings and imaging indications, and to establish institutional diagnostic reference levels (DRLs) for dose optimisation. Methods: A retrospective analysis of the DAP values of 3568 CBCT examinations taken from two different devices at the Prince Philip Dental Hospital, Hong Kong between 2016 and 2021 was performed. Patient- (age, gender, and imaging indication) and imaging-related (CBCT device, field-of-view (FOV), and voxel size) were correlated with the DAPs. The indication-oriented third-quartile DAP values were compared with DRLs from the UK, Finland, and Switzerland. The obtained third-quartile DAPs lower than the national DRLs and those for which no national DRLs have been proposed were used to establish institutional DRLs. Results: In the investigated CBCTs, the DAP value for large FOV scans was significantly lower than medium/small FOVs. CBCTs with a small voxel size exhibited a significantly higher DAP than those with a medium/large voxel size. CBCTs for endodontic, periodontal, orthodontic, or orthognathic evaluation exhibited a significantly higher DAP than other indications. Twelve indication-oriented institutional DRLs were established and five of them were lower than the national DRLs: third molars (229 mGy×cm2), jaw cysts/tumours (410 mGy×cm2), maxillary sinus pathology (520 mGy×cm2), developing dentition (164 mGy×cm2), and periapical lesions (564 mGy×cm2). Conclusions: CBCT examinations for endodontic, periodontal, orthodontic, or orthognathic evaluation may deliver a higher radiation dose to the patient than other imaging tasks. A periodic review of the patient dose from CBCT imaging and establishment of institutional DRLs for specific clinical settings are needed for monitoring patient dose and to optimise indication-oriented scanning protocols.
Persistent Identifierhttp://hdl.handle.net/10722/329862
ISSN
2023 Impact Factor: 2.9
2023 SCImago Journal Rankings: 0.816
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHung, Kuo Feng-
dc.contributor.authorHui, Liuling-
dc.contributor.authorYeung, Andy Wai Kan-
dc.contributor.authorJacobs, Reinhilde-
dc.contributor.authorLeung, Yiu Yan-
dc.contributor.authorBornstein, Michael M.-
dc.date.accessioned2023-08-09T03:35:53Z-
dc.date.available2023-08-09T03:35:53Z-
dc.date.issued2022-
dc.identifier.citationDentomaxillofacial Radiology, 2022, v. 51, n. 5, article no. 20200529-
dc.identifier.issn0250-832X-
dc.identifier.urihttp://hdl.handle.net/10722/329862-
dc.description.abstractObjectives: To investigate the dose-area product (DAP) of cone-beam computed tomography (CBCT) examinations for different scan settings and imaging indications, and to establish institutional diagnostic reference levels (DRLs) for dose optimisation. Methods: A retrospective analysis of the DAP values of 3568 CBCT examinations taken from two different devices at the Prince Philip Dental Hospital, Hong Kong between 2016 and 2021 was performed. Patient- (age, gender, and imaging indication) and imaging-related (CBCT device, field-of-view (FOV), and voxel size) were correlated with the DAPs. The indication-oriented third-quartile DAP values were compared with DRLs from the UK, Finland, and Switzerland. The obtained third-quartile DAPs lower than the national DRLs and those for which no national DRLs have been proposed were used to establish institutional DRLs. Results: In the investigated CBCTs, the DAP value for large FOV scans was significantly lower than medium/small FOVs. CBCTs with a small voxel size exhibited a significantly higher DAP than those with a medium/large voxel size. CBCTs for endodontic, periodontal, orthodontic, or orthognathic evaluation exhibited a significantly higher DAP than other indications. Twelve indication-oriented institutional DRLs were established and five of them were lower than the national DRLs: third molars (229 mGy×cm2), jaw cysts/tumours (410 mGy×cm2), maxillary sinus pathology (520 mGy×cm2), developing dentition (164 mGy×cm2), and periapical lesions (564 mGy×cm2). Conclusions: CBCT examinations for endodontic, periodontal, orthodontic, or orthognathic evaluation may deliver a higher radiation dose to the patient than other imaging tasks. A periodic review of the patient dose from CBCT imaging and establishment of institutional DRLs for specific clinical settings are needed for monitoring patient dose and to optimise indication-oriented scanning protocols.-
dc.languageeng-
dc.relation.ispartofDentomaxillofacial Radiology-
dc.subjectCone-beam computed tomography-
dc.subjectdiagnostic reference level-
dc.subjectdose optimisation-
dc.subjectlow-dose protocol-
dc.subjectradiation monitoring-
dc.titleAn analysis of patient dose received during cone-beam computed tomography in relation to scan settings and imaging indications as seen in a dental institution in order to establish institutional diagnostic reference levels-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1259/dmfr.20200529-
dc.identifier.pmid35230883-
dc.identifier.scopuseid_2-s2.0-85132454529-
dc.identifier.volume51-
dc.identifier.issue5-
dc.identifier.spagearticle no. 20200529-
dc.identifier.epagearticle no. 20200529-
dc.identifier.eissn1476-542X-
dc.identifier.isiWOS:000817996700011-

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