Abstract

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Author(s):: WANG Jinyuan1; DAI Xiangkun1; ZHENG Qingzeng2; JU Zhongjian1; PAN Longsheng3; QU Baolin1; WANG Chengcheng1; XU Shouping1; 1. Department of Radiation Oncology, the First Medical Center of the PLA General Hospital, Beijing 100853, China 2. Department of Radiation Oncology, Beijing Geriatric Hospital, Beijing 100095, China 3. Department of Neurosurgery, the First Medical Center of the PLA General Hospital, Beijing 100853, China

Abstract:: Abstract: Precise dose delivery is the key to the success of stereotactic radiosurgery. Zap-X system is a kind of radiotherapy equipment equipped with self-shielding function for the stereotactic radiosurgery of tumors in the brain, head and neck. Herein the technical characteristics of Zap-X system are briefly described, introducing the composition of Zap-X system from mechanical structure, self-shielding system, mechanical movement system, radiation collimator system, treatment planning system, kV image guidance system and MV image verification system. The treatment process of the system is explained and its clinical application is evaluated. Finally, the future development of the system is discussed. The designs of the rotating collimator and self-shielding protection greatly reduce the installation cost of the equipment. The removable megavoltage radiation detectors can monitor the dose accuracy during the treatment process in real time. The use of linear accelerator instead of radioactive source makes it safe and stable to a certain extent. As the first-generation product of the system, more technical aspects still need to be further improved.