摘要目的:基于文献分析我国直线加速器输出剂量核查的现状，包括输出剂量偏差范围及输出剂量偏差合格率。方法:在CNKI数据库中进行包括非全文的文献检索，分别检索使用剂量计比对法和质量控制检测法进行输出剂量核查的文献，对符合条件的每类文献进行数据提取和分析。提取每篇文献中测量的直线加速器台数、合格的直线加速器台数、输出剂量偏差合格率、输出剂量偏差范围等数据信息，根据测量的直线加速器总台数以及合格的直线加速器总台数计算输出剂量偏差的总合格率。对历年输出剂量偏差合格率数据及输出剂量偏差数据进行整理，分析其趋势。结果:共检索到11篇使用剂量计比对法进行输出剂量核查的文献，这类文献所报道的输出剂量偏差的总合格率为90.7%，早年输出剂量偏差合格率最低为75.0%，最高为100.0%，近年来维持在90%左右。共检索到19篇使用质量控制检测法进行输出剂量核查的文献，这类文献所报道的X射线输出剂量偏差的总合格率为86.5%，电子线输出剂量偏差的总合格率为78.4%。2014—2019年的12个X射线输出剂量合格率数据中，<90.0%的有8个，≥90.0%的为4个。2020—2023年的7个X射线输出剂量合格率数据中，<90.0%的有2个，≥90.0%的为5个。2021年之前的电子线输出剂量合格率为46.2%～80.0%，2021—2023年电子线输出剂量合格率均为100%。结论:近年来文献中报道的我国直线加速器输出剂量偏差合格率呈上升趋势，但我国直线加速器输出剂量偏差的总合格率目前仍低于发达国家的95%以上。为切实保证广大放射治疗患者的治疗效果，我国应进一步采取措施减少直线加速器的输出剂量偏差，提升直线加速器输出剂量偏差的合格率水平。

abstractsObjective:To analyze the current situation of dosimetry audits for linear accelerators in China comprehensively based on the literature, including the range of output dose deviation and the qualified rate of output dose deviation.Methods:Literature search including non-full-text was carried out in CNKI database for literature on output dose verification using dosimeter comparison and quality control test, respectively. Data extraction and analysis were carried out for each kind of eligible literature. The data on the number of tested linear accelerators, the number of qualified linear accelerators, the qualified rate of output dose deviation and the range of output dose deviation were extracted, and the total qualified rate of output dose deviation was calculated based on the total number of tested linear accelerators and the total number of qualified linear accelerators. The data on qualified rate of output dose deviation and output dose deviation in past years were sorted out and their trend was analyzed.Results:A total of 11 literatures using dosimeter comparison method for output dose verification were retrieved, and the total qualified rate of the output dose deviation reported in these literatures was 90.7%. The qualified rate of the output dose deviation in the early years was either as low as 75% or as high as 100%, and remained around 90% in recent years. A total of 19 literatures using quality control test method for output dose verification were retrieved, and the total qualified rate of X-ray and electron beam output dose deviation reported in these literatures was 86.5% and 78.4%, respectively. Of the 12 data on X-ray output dose qualified rate in 2014-2019, 8 were below 90.0% and 4 were above 90.0%. Of the 7 data on X-ray output dose qualified rate in 2020-2023, 2 were below 90.0% and 5 were greater than or equal to 90.0%. The qualified rate of electron beam output dose was 46.2%-80.0% before 2021 and 100% from 2021 to 2023.Conclusions:The qualified rate of the output dose deviation of linear accelerators in China reported in the literature in recent years is on the rise, but the total qualified rate of the output dose deviation of linear accelerators in China is still lower than in developed countries. In order to ensure the therapeutic effect of the patients undergoing radiotherapy, measures should be taken to reduce the output dose deviation of linear accelerators and improve the level of qualified rate of output dose verification.