{"id":5335,"date":"2019-04-29T10:40:51","date_gmt":"2019-04-29T09:40:51","guid":{"rendered":"http:\/\/www.library.sath.nhs.uk\/research\/?p=5335"},"modified":"2020-05-24T11:32:04","modified_gmt":"2020-05-24T10:32:04","slug":"tps-calculated-vs-measured-dose-around-a-prosthetic-hip-implant-2018","status":"publish","type":"post","link":"https:\/\/www.library.sath.nhs.uk\/research\/2019\/04\/29\/tps-calculated-vs-measured-dose-around-a-prosthetic-hip-implant-2018\/","title":{"rendered":"TPS-calculated vs. measured dose around a prosthetic hip implant (2018)"},"content":{"rendered":"<p><strong>Type of publication:<\/strong><br \/>\nPoster presentation<\/p>\n<p><strong>Author(s):<\/strong><br \/>\n*Maryke Fox, *Mike Alexander<\/p>\n<p><strong>Citation:<\/strong><br \/>\nIPEM Medical Physics &amp; Engineering Conference &amp; Biennial Radiotherapy Meeting Proceedings, York, UK. September 2018<\/p>\n<p><strong>Abstract:<\/strong><br \/>\nAn increasing number of patients presenting for prostate radiotherapy have prosthetic hips. It is well known<br \/>\nthat modern treatment planning systems are unable to accurately model dose in the vicinity of high density<br \/>\nprostheses. This work sought to characterise how dose is modelled by the Eclipse TPS around a hip\u00a0prosthesis in a water phantom by comparing the modelled dose with dose measured by a Farmer chamber\u00a0and find estimate dose due to scatter. Transmission, lateral scatter and back scatter were measured at a\u00a0range of distances from the prosthesis and compared to the Eclipse modelled dose. It was found that dose\u00a0distal to the prosthesis was underestimated by over 20%, backscatter was not modelled at all by Eclipse\u00a0but lateral scatter was adequately modelled. The dose due to backscatter and lateral scatter from the\u00a0prosthesis were not significant contributors to dose. These results indicate that planners should avoid\u00a0treating through prosthetic hips, and that dose due to scatter was unlikely to cause ill effects.<\/p>\n<p><a href=\"http:\/\/www.library.sath.nhs.uk\/wp-content\/uploads\/2020\/05\/TPS-calculated-vs.-measured-dose-around-a-prosthetic-hip-implant-final-Maryke-Fox-Read-only4.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Link to poster [PDF]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Type of publication: Poster presentation Author(s): *Maryke Fox, *Mike Alexander Citation: IPEM Medical Physics &amp; Engineering Conference &amp; Biennial Radiotherapy Meeting Proceedings, York, UK. September 2018 Abstract: An increasing number of patients presenting for prostate radiotherapy have prosthetic hips. It<span class=\"ellipsis\">&hellip;<\/span><\/p>\n<div class=\"read-more\"><a href=\"https:\/\/www.library.sath.nhs.uk\/research\/2019\/04\/29\/tps-calculated-vs-measured-dose-around-a-prosthetic-hip-implant-2018\/\">Read more <span class=\"screen-reader-text\">TPS-calculated vs. measured dose around a prosthetic hip implant (2018)<\/span><span class=\"meta-nav\"> &#8250;<\/span><\/a><\/div>\n<p><!-- end of .read-more --><\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[200],"tags":[768,839,602],"class_list":["post-5335","post","type-post","status-publish","format-standard","hentry","category-staff-publication","tag-768","tag-hips","tag-radiotherapy"],"_links":{"self":[{"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/posts\/5335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/comments?post=5335"}],"version-history":[{"count":2,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/posts\/5335\/revisions"}],"predecessor-version":[{"id":5960,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/posts\/5335\/revisions\/5960"}],"wp:attachment":[{"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/media?parent=5335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/categories?post=5335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.library.sath.nhs.uk\/research\/wp-json\/wp\/v2\/tags?post=5335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}