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- W2807141738 abstract "Stereotactic Body Radiation Therapy: Spinal Metastasis Optimal fractionation for SBRT for spinal metastasisRoi Dagan & Robert J AmdurRoi DaganRoi Dagan is Assistant Professor of Radiation Oncology at the University of Florida Proton Therapy Institute (USA). He completed his medical and postgraduate training at the University of Florida. His clinical focus includes management of head and neck and breast cancers, and he directs the stereotactic radiotherapy program at the University of Florida Proton Therapy Institute. This includes stereotactic conventional and proton therapy for primary lung tumors, primary and metastatic ocular tumors, and metastatic tumors involving the spine, lungs and liver. His research interests include clinical outcomes of patients managed with stereotactic ablative radiotherapy for oligometastases.Search for more papers by this author & Robert J AmdurRobert J Amdur is Professor of Radiation Oncology at the University of Florida. He currently serves as Residency Program Director and previously served as interim chair of the Radiation Oncology Department. His clinical interests include management of head and neck, CNS, gynecologic and spine tumors. His research has spanned multiple areas including clinical outcomes in head and neck radiotherapy, spine radiosurgery, medical education and biomedical ethics.Search for more papers by this authorPublished Online:9 Jul 2014https://doi.org/10.2217/ebo.13.690AboutSectionsView ArticleView Full TextPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinkedInReddit View chapterAbstract: Summary Stereotactic body radiation therapy (SBRT) for spinal metastases requires the use of extreme hypofractionation. Both single- and multi-fraction regimens have been used with doses ranging from 10 to 24 Gy in one fraction and from 24 to 35 Gy in three to five fractions. Single-fraction spine SBRT is more convenient for the patient and treatment staff, but spinal cord toxicity may be higher and there may be a higher risk for vertebral compression fracture associated with fractional doses above 20 Gy. No single optimal fractionation scheme appears superior. Patients with tumors encroaching on the epidural space, prior radiotherapy or oligometastases are better suited for multifraction spine SBRT. Regardless of the fractionation scheme used, keeping within the spinal cord tolerance should be the primary planning objective. References1 Heron DE , Rajagopalan MS , Stone B et al. Single-session and multisession CyberKnife radiosurgery for spine metastases-University of Pittsburgh and Georgetown University experience . J. Neurosurg. Spine 17 (1) , 11 – 18 (2012) . Crossref, Medline, Google Scholar2 Kirkpatrick JP , Meyer JJ , Marks LB . The linear-quadratic model is inappropriate to model high dose per fraction effects in radiosurgery . Semin. Radiat. 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