Monte carlo study on 6 MV photon beams of a CyberKnife® stereotactic radiosurgery system

LOW ENERGY ACCELERATORS AND RADIATION APPLICATIONS

Monte carlo study on 6 MV photon beams of a CyberKnife® stereotactic radiosurgery system

DONG Xiaoqing，

LUO Wenyun，

YUE Kun，

WANG Chuanshan，

ZHOU Shiqing，

PAN Fuxing，

WANG Enmin，

WANG Chaozhuang

Nuclear Science and Techniques

Vol.21, No.1

pp.16-19

Published in print 20 Feb 2010

DOI：10.13538/j.1001-8042/nst.21.16-19

36001

In this paper, the beam quality and percent depth dose curves for different field sizes of CyberKnife® system were investigated by Monte Carlo simulations using the PENELOPE code, which has been used to simulate 6 MV photon beam. In water phantom, the absolute doses were calculated for Φ10–60 mm collimators, and percent depth dose curves were evaluated for Φ30–60 mm collimators. The agreement of dose distributions of the calculation with measurement was within 3.0%. The mean energy of photon spectrum was 1.46 MeV, and the beam quality index was 0.632, which was slightly smaller than that of measurement.

Monte CarloPENELOPECyberKnifeBeam qualityPercent depth dose

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