Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2010, Vol. 21 ›› Issue (1): 16-19 doi: 10.13538/j.1001-8042/nst.21.16-19


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

DONG Xiaoqing1 LUO Wenyun1* YUE Kun1 WANG Chuanshan1 ZHOU Shiqing1 PAN Fuxing1 WANG Enmin2 WANG Chaozhuang2   

  1. 1 Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China 2 Cyberknife center, Hua Shan Hospital Affiliated to School of Medicine, Fu Dan University, Shanghai 201206, China
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DONG Xiaoqing, LUO Wenyun, YUE Kun, WANG Chuanshan, ZHOU Shiqing, PAN Fuxing, WANG Enmin, WANG Chaozhuang. Monte carlo study on 6 MV photon beams of a CyberKnife® stereotactic radiosurgery system.Nuclear Science and Techniques, 2010, 21(1): 16-19     doi: 10.13538/j.1001-8042/nst.21.16-19


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.

Key words: Monte Carlo, PENELOPE, CyberKnife, Beam quality, Percent depth dose