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- W152319095 abstract "The purposes of this analysis were the evaluation of the toxicity of stereotactic single dose irradiation in patients with an arteriovenous malformation (AVM) and the comparison of the authors' own results with already existing risk prediction models. Computed-tomography (CT) or magnetic-resonance (MR) images, and clinical data of patients treated with linear accelerator radiosurgery for an AVM were analysed retrospectively. Using the Cox proportional hazards model (1), the relevance of treatment parameters and dose-volume relationships to the occurrence of radiation-induced tissue changes (oedema and localised blood-brain-barrier breakdown) were assessed. The 81 patients selected for analysis had a mean follow-up of 28.9 months (range: 9.0-65.7 months). Radiation-induced tissue changes (22 out of 81 i.e. 27.2%) were documented on CT or MR images 6.3-33.8 months after radiosurgery (median time: 12.8 months). The actuarial risk at 2 years was 32.1% for the development of neuroradiological changes and 20.1% for the development of symptomatic tissue alteration. The coefficient of total volume receiving a minimum dose of 10 Gy (VTREAT10) reached statistical significance in a Cox proportional hazards model. These results demonstrate the particular vulnerability of normal brain tissue to single dose irradiation. Optimal conformation of the therapeutic isodose line to the 3D configuration of the target volume may help to reduce side effects." @default.
- W152319095 created "2016-06-24" @default.
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- W152319095 date "1997-01-01" @default.
- W152319095 modified "2023-10-16" @default.
- W152319095 title "Risk Analysis of LINAC Radiosurgery in Patients with Arteriovenous Malformation (AVM)" @default.
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- W152319095 doi "https://doi.org/10.1007/978-3-7091-6513-3_22" @default.
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