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Journal of Radiation Research and Radiation Processing, Volume. 41, Issue 3, 030304(2023)

Design and research of an improved radiosurgical collimator

Yun ZHOU1,2, Weihai CHEN4, Yongbiao LIU5,6, Nan YAN1,2, Xiangshang SUN7, Wentao LIAO1,2, Junya LIU1,2, and Yuehu PU3、*
Author Affiliations
  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Medical Equipment Innovation Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
  • 4(Techtron information technology (Shanghai) Co., Ltd., Shanghai 200233, China)
  • 5Nanjing Maicong Medical Technology Co., Ltd., Nanjing 210023, China
  • 6Department of Radiation Physics and Technology, Jiangsu Province Hospital, Nanjing 210029, China
  • 7Department of Radiation Physics and Technology, Hunan Cancer Hospital, Changsha 410013, China
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    In this paper, a new collimator based on Hygeia GMX-1 cobalt (60Co) radiosurgery system was designed and analyzed using the Monte Carlo simulation program GEANT4. The results of EBT3 film measurements showed that the field penumbra of the improved collimator was reduced by 17.6% and the absorbed dose rate was 2.12 times higher, while the source activity, source axis distance and field size remained unchanged. The collimator has significant advantages in the two key technical parameters of absorbed dose rate and penumbra.

    Keywords
    CollimatorDose ratePenumbraRadiotherapy
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    Yun ZHOU, Weihai CHEN, Yongbiao LIU, Nan YAN, Xiangshang SUN, Wentao LIAO, Junya LIU, Yuehu PU. Design and research of an improved radiosurgical collimator[J]. Journal of Radiation Research and Radiation Processing, 2023, 41(3): 030304

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    Paper Information

    Category: Research Articles

    Received: Dec. 28, 2022

    Accepted: Feb. 17, 2023

    Published Online: Jul. 24, 2023

    The Author Email:

    DOI:10.11889/j.1000-3436.2022-0142

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology