Optimization of brain tumours irradiation determining the set-up margin

نویسندگان

چکیده

The aim of this work was to evaluate whether the excising margin clinical tumor volume and planning target correspond with calculated radiation based on systematic errors, definition margins individual brain lobes. This research a retrospective cross-sectional study. We checked errors their average size margins. were in four directions: lateral, longitudinal, vertical, rotation. largest error lateral direction cerebellar area, also statistically significant(p < 0.05). In rotational we notice significant difference frontal lopbe (p = 0.037), area 0.002). safety margin, as measured by apverage is requirped for irradiation cerebellum. 6.94 mm according formula Van Herk. However, smallest can be used occipital lobe brain, namely 4.85 mm. linear regression results that only lesions affect displacements. Based our calculation mean estimate - can't reduced further from current 5 3 without use image guided radiotherapy.

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ژورنال

عنوان ژورنال: Nuclear Technology & Radiation Protection

سال: 2022

ISSN: ['1451-3994', '1452-8185']

DOI: https://doi.org/10.2298/ntrp2203235z