加速器作为一种有效的肿瘤放射治疗工具,近年已在国内推广使用。加速器的种类很多,医疗上使用最多的是电子感应加速器、电子直线加速器及电子回旋加速器。它们可以产生高能电子束,又可以产生高能X线。电子直线加速器具有高输出的特点,其电子束和X线都有足够的输出量,是临床应用较多的等中心兆伏级治疗机。一、电子直线加速器的结构及原理电子直线加速器是采用微波电场将电子加速到高能的装置,一般使用的频率为3000MHz。它由加速 Accelerator as an effective tool for radiation oncology has been promoted in China in recent years. There are many types of accelerators, and the most widely used medical sensors are electron-induced accelerators, electron linear accelerators and electron cyclotrons. They produce high-energy electron beams and produce high-energy X-rays. Electronic linear accelerator with high output characteristics, the electron beam and X-ray have enough output, is more clinical applications such as megafluroctor treatment center. First, the structure and principle of linear electron accelerator Electronic linear accelerator is the use of microwave electric field to accelerate electrons to high-energy devices, the general frequency of 3000MHz. It is accelerated