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High-resolution dose profile studies based on MR Imaging with polymer BANGTM gels in stereotactic radiation techniques

2000; Elsevier BV; Volume: 18; Issue: 3 Linguagem: Inglês

10.1016/s0730-725x(99)00131-9

1873-5894

Adolf Ertl, Andreas Berg, Martin Zehetmayer, Peter Frigo,

Nuclear Physics and Applications

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.