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High-resolution dose profile studies based on MR imaging with polymer BANG(TM) gels in stereotactic radiation
1Department of Neurosurgery, University of Vienna, Vienna, Austria. Adolf.Ertl@akh-wien.ac.at
Magnetic Resonance Imaging
|April 4, 2000
Abstract:
High-resolution dose profiles produced by the Leksell Gamma Knife were obtained in BANG(TM) polymer gel, using a 3 T whole-body scanner upgraded by a magnetic resonance microscopy unit. The gel was contained in 22.3 mm diameter flasks that were inserted into a solid, tissue-equivalent head phantom irradiated by fields of by 8 and 14 mm collimators. Dose profiles were obtained from a linear dose-response curve (R(2) vs. Dose). Excellent agreement was obtained when the gel data were compared to film dosimetry and calculated data.