便携式X光机是以X射线原理成像的可达到透视目的的小型(微型)X光机。便携式X光机主要由X光管和电源以及控制电路等组成，而X光管又由阴极灯丝 （Cathod）和阳极靶（Anode）以及真空玻璃管组成，提供高压电场使灯丝上活跃的加速流向阴极，形成了高速的电子流。高速电子流穿透物体，经过ct透视仪处理，生成透视画面。

The portable X optical machine is a small (miniature) X optical machine that can reach the target of perspective by the principle of X ray. Portable X machine is mainly composed of X light tube and power supply and control circuit, and the X light tube and a cathode filament (Cathod) and anode (Anode) and vacuum glass tubes, provide high voltage electric field makes the filament active to accelerate the flow of the cathode, forming a high-speed electron flow. The high-speed electron stream penetrates the object through the CT fluoroscopy and generates the perspective picture.