Department of Engineering Physics;
Tsinghua University;
Beijing 100084;
China;
Key Laboratory of Particle and Radiation Imaging;
Tsinghua University;
Ministry of Education;
Beijing 100084;
China;
Nuctech Company Limited;
Beijing 100084;
China;
Department of Radiation Oncology;
Peking University Third Hospital;
Beijing 100191;
China;
High-dose-rate brachytherapy; Monte Carlo; Heterogeneous computing; Hardware accelerators;