{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T20:25:10Z","timestamp":1788207910064,"version":"build-2803163510"},"reference-count":19,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,1,11]],"date-time":"2023-01-11T00:00:00Z","timestamp":1673395200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Tomography"],"abstract":"<jats:p>(1) Background: The impacts of metal artifacts (MAs) on the contouring workload for head and neck radiotherapy have not yet been clarified. Therefore, this study evaluated the relationship between the contouring time of the MAs area and MAs on head and neck radiotherapy treatment planning. (2) Methods: We used treatment planning computed tomography (CT) images for head and neck radiotherapy. MAs were classified into three severities by the percentage of CT images containing MAs: mild (&lt;25%), moderate (25\u201375%), and severe (&gt;75%). We randomly selected nine patients to evaluate the relationship between MAs and the contouring time of the MAs area. (3) Results: The contouring time of MAs showed moderate positive correlations with the MAs volume and the number of CT images containing MAs. Interobserver reliability of the extracted MAs volume and contouring time were excellent and poor, respectively. (4) Conclusions: Our study suggests that the contouring time of MAs areas is related to individual commitment rather than clinical experience. Therefore, the development of software combining metal artifact reduction methods with automatic contouring methods is necessary to reducing interobserver variability and contouring workload.<\/jats:p>","DOI":"10.3390\/tomography9010009","type":"journal-article","created":{"date-parts":[[2023,1,11]],"date-time":"2023-01-11T05:26:31Z","timestamp":1673414791000},"page":"98-104","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Relationship between the Contouring Time of the Metal Artifacts Area and Metal Artifacts in Head and Neck Radiotherapy"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7341-4840","authenticated-orcid":false,"given":"Kouji","family":"Katsura","sequence":"first","affiliation":[{"name":"Department of Oral Radiology, Niigata University Medical and Dental Hospital, Niigata 951-8520, Japan"},{"name":"Division of Oral and Maxillofacial Radiology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3488-3871","authenticated-orcid":false,"given":"Satoshi","family":"Tanabe","sequence":"additional","affiliation":[{"name":"Division of Radiation Oncology, Niigata University Medical and Dental Hospital, Niigata 851-8520, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9023-880X","authenticated-orcid":false,"given":"Hisashi","family":"Nakano","sequence":"additional","affiliation":[{"name":"Division of Radiation Oncology, Niigata University Medical and Dental Hospital, Niigata 851-8520, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madoka","family":"Sakai","sequence":"additional","affiliation":[{"name":"Department of Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Atsushi","family":"Ohta","sequence":"additional","affiliation":[{"name":"Department of Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Motoki","family":"Kaidu","sequence":"additional","affiliation":[{"name":"Department of Radiology and Radiation Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie","family":"Soga","sequence":"additional","affiliation":[{"name":"Department of Oral Radiology, Niigata University Medical and Dental Hospital, Niigata 951-8520, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taichi","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Division of Oral and Maxillofacial Radiology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaki","family":"Takamura","sequence":"additional","affiliation":[{"name":"Division of Oral and Maxillofacial Radiology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takafumi","family":"Hayashi","sequence":"additional","affiliation":[{"name":"Department of Oral Radiology, Niigata University Medical and Dental Hospital, Niigata 951-8520, Japan"},{"name":"Division of Oral and Maxillofacial Radiology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8514, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1097\/01.coc.0000256704.58956.45","article-title":"The effect of dental artifacts, contrast media, and experience on interobserver contouring variations in head and neck anatomy","volume":"30","author":"Rosenthal","year":"2007","journal-title":"Am. 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