{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T15:32:46Z","timestamp":1783092766556,"version":"3.54.6"},"reference-count":26,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2019,9,13]],"date-time":"2019-09-13T00:00:00Z","timestamp":1568332800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Conseil D\u00e9partemental des Alpes-Maritimes, France"},{"name":"Synoptik-Foundation"},{"DOI":"10.13039\/501100005929","name":"the Danish Eye Research Foundation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100005929","id-type":"DOI","asserted-by":"crossref"}]},{"name":"the Danish Cancer Research Foundation"},{"name":"the Arvid Nilssons Foundation"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Ophthalmologica"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The use of planar ultra\u2010widefield fundus photography (<jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content>) may result in distortions and inaccurate measurement. The aim of the study was to evaluate the accuracy of <jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content> instead of the standard narrow field (<jats:styled-content style=\"fixed-case\">SF<\/jats:styled-content>) for the treatment planning phase of ocular tumours.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Distortions between conformal <jats:styled-content style=\"fixed-case\">SF<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content> were assessed in 43 patients with choroidal melanoma treated with either proton therapy or brachytherapy. <jats:sc>imagej<\/jats:sc> software was used to measure distortion.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The median interquartile range ([<jats:styled-content style=\"fixed-case\">IQR<\/jats:styled-content>]) distortion for all cases was 3.7% [1.7\u201310.8]. For cases with tumours within 6\u00a0mm of the optic disc, distortions appeared clinically nonsignificant. For peripheral and\/or large tumours, significantly larger distortions were observed on <jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content> (median 4.4% [2.7\u201322.6] for tumours \u22656\u00a0mm from the optic disc versus 3.3% [1.6\u20139.9] for those &lt;6\u00a0mm, p\u00a0=\u00a00.04). Images can be subdivided into three groups: minimal distortion (79.1% of eyes), similar level of major distortion for both measured distances (11.6%) and distortion with unequal level of distortion between the measured distances (9.3%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Distortions with <jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content> appeared minimal in posterior regions of the fundus and increased with the distance from the posterior pole. <jats:styled-content style=\"fixed-case\">UWF<\/jats:styled-content> could therefore be used for treatment planning of ocular tumours as the planned radiation dose to the macula and optic disc are not impacted.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aos.14250","type":"journal-article","created":{"date-parts":[[2019,9,13]],"date-time":"2019-09-13T14:15:22Z","timestamp":1568384122000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Ultra\u2010widefield fundus photography for radiation therapy planning of ocular tumours"],"prefix":"10.1111","volume":"98","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1418-1872","authenticated-orcid":false,"given":"Thibaud","family":"Mathis","sequence":"first","affiliation":[{"name":"Department of Ophthalmology Croix\u2010Rousse University Hospital Hospices Civils de Lyon Lyon France"},{"name":"UMR\u2010CNRS 5510 Mat\u00e9is Villeurbane France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charlotte A.","family":"Espensen","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Rigshospitalet Copenhagen Denmark"},{"name":"Department of 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