High-resolution dose profile studies based on MR imaging with polymer BANG(TM) gels in stereotactic radiation techniques.
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.
Ertl
A
A
Department of Neurosurgery, University of Vienna, Vienna, Austria. Adolf.Ertl@akh-wien.ac.at
Berg
A
A
Zehetmayer
M
M
Frigo
P
P
D002138:Calibration; D004307:Dose-Response Relationship, Radiation; D005069:Evaluation Studies as Topic; D005720:Gamma Rays; D005782:Gels / Q000528:radiation effects*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008959:Models, Neurological; D019047:Phantoms, Imaging; D011108:Polymers / Q000528:radiation effects*; D016634:Radiosurgery; D011879:Radiotherapy Dosage; D013238:Stereotaxic Techniques
C106521:BANG polymer gel; D005782:Gels; D011108:Polymers