{"title":"Clinical application of real-time tumor-tracking for stereotactic volumetric modulated arc therapy for liver tumors","authors":"Naoki Miyamoto , Norio Katoh , Takahiro Kanehira , Kohei Yokokawa , Ryusuke Suzuki , Yusuke Uchinami , Hiroshi Taguchi , Daisuke Abo , Hidefumi Aoyama","doi":"10.1016/j.phro.2024.100623","DOIUrl":null,"url":null,"abstract":"<div><p>Real-time tumor-tracking volumetric modulated arc therapy (RT-VMAT) enabling beam-gating based on continuous X-ray tracking of the three-dimensional position of internal markers is relevant for moving tumors. Dose-volume characteristics and treatment time were evaluated in ten consecutive patients who underwent liver stereotactic body radiation therapy with RT-VMAT. Target dose conformity and sparing of the stomach and the intestine were improved comparing RT-VMAT with RT-3D conformal radiotherapy. The mean treatment time for each fraction was less than 10 min. RT-VMAT could be effective, especially for targets located adjacent to organs at risk.</p></div>","PeriodicalId":36850,"journal":{"name":"Physics and Imaging in Radiation Oncology","volume":"31 ","pages":"Article 100623"},"PeriodicalIF":3.3000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405631624000939/pdfft?md5=cf3707e6bfe09fe028209ce2dd045420&pid=1-s2.0-S2405631624000939-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Imaging in Radiation Oncology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2405631624000939","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ONCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Real-time tumor-tracking volumetric modulated arc therapy (RT-VMAT) enabling beam-gating based on continuous X-ray tracking of the three-dimensional position of internal markers is relevant for moving tumors. Dose-volume characteristics and treatment time were evaluated in ten consecutive patients who underwent liver stereotactic body radiation therapy with RT-VMAT. Target dose conformity and sparing of the stomach and the intestine were improved comparing RT-VMAT with RT-3D conformal radiotherapy. The mean treatment time for each fraction was less than 10 min. RT-VMAT could be effective, especially for targets located adjacent to organs at risk.
实时肿瘤跟踪容积调制弧治疗（RT-VMAT）可根据对内部标记物三维位置的连续 X 射线跟踪进行射束分流，这对移动肿瘤很有意义。我们对连续接受肝脏立体定向体放射治疗的十名患者的剂量-体积特征和治疗时间进行了评估。与RT-3D适形放疗相比，RT-VMAT的靶剂量适形性和对胃肠的保护得到了改善。每部分的平均治疗时间不到10分钟。RT-VMAT 疗效显著，尤其是对于邻近危险器官的靶点。
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