Yin Fang-Fang, Zhu Jingeng, Yan Hui, Gaun Haiqun, Hammoud Rabih, Ryu Samuel, Kim Jae H
Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan 48202, USA.
Med Phys. 2002 Aug;29(8):1729-38. doi: 10.1118/1.1494830.
The dosimetric characteristics of a new dedicated radiosurgical treatment unit are systematically measured in terms of its percent depth dose, beam profile, and relative scatter factor. High-resolution diode detector, mini-ion-chamber detector, and conventional Kodak XV films are used to measure dosimetric data for a range of field sizes from 6x6 mm to 100x100 mm. The effects of collimator size, micro-multileaf collimator shape, and detector type on the dosimetric data are investigated. Results indicate that, with careful design, accurate dosimetric data could be acquired using either a dedicated diode detector or a mini-ion-chamber detector, and film detector. Special attention is required when measuring dosimetric data for small field sizes such as 6x6 mm.
