后装放疗剂量验证软件研究

doi:10.3760/cma.j.issn.1004-4221.2020.02.012

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Abstract Objective To report an implementation method and results of an independent brachytherapy dose verification software (DVS). Methods The DVS was developed based on Visual C++ and the modular structure design was adopted. The DICOM RT files exported from the treatment planning system (TPS) were automatically loaded into the DVS. The TG-43 formalism was employed for dose calculation. Six cervical cancer patients who underwent brachytherapy were retrospectively selected to test the DVS. Different applicators were utilized for each patient. Dosimetric parameters and γ analysis (0.1cm, 5%) were used to evaluate the dose difference between the DVS and the TPS. Results Compared with the TPS dose,the γ pass rates of the doses calculated by the DVS were higher than 98%. For CTV, the dosimetric differences were less than 0.29% and 0.53% for D100% and D90%. For bladder, rectum and sigmoid, the agreement of D0.1cm³, D1cm³and D2cm³ within a 0.5% level. Conclusion With minimal human-computer interactions, the DVS can verify the accuracy of dose calculated by TPS for brachytherapy.

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	Articles by authors
	Wang Xianliang
	Wang Pei
	Li Churong
	Li Jie
	Kang Shengwei
	Liu Min
	Tang Ting
	Wu Zhangwen
	Hou Qing

Key words： Brachytherapy Dose verification Treatment planning system Quality assurance

Received: 23 June 2018

Fund:Key Research and Development Project of Sichuan (2017GZ0322,2018GZ0197);National Key Research and Development Plan (2016YFC0105103)

Corresponding Authors: Hou Qing,Email:qhou@scu.edu.cn

Cite this article:

Wang Xianliang,Wang Pei,Li Churong et al. A study of an independent dose verification software for brachytherapy[J]. Chinese Journal of Radiation Oncology, 2020, 29(2): 131-135.

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http://journal12.magtechjournal.com/Jweb_fszlx/EN/10.3760/cma.j.issn.1004-4221.2020.02.012 OR http://journal12.magtechjournal.com/Jweb_fszlx/EN/Y2020/V29/I2/131

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