The invention relates to a mobile X-ray unit (10) comprising a base (2) for accommodating a control unit and a power supply, further comprising an articulated displaceable arm (4a) supporting an X-ray applicator (4) provided with an X-ray tube, the X-ray applicator comprising an exit surface through which the X-ray beam passes in use and an applicator cap for covering at least the exit surface.本發明有關一種移動式X光單元(10),包括一基座(2)用以容置一控制單元及一電源供應器,且更包括一鉸接可位移式臂(4a)用以支撐具有一X光管之一X光裝療器(4),X光裝療器包括一出口表面,在使用時X光射束可經由此穿過,以及一裝療器蓋覆蓋於至少出口表面上。2‧‧‧基座(base)3‧‧‧軟性纜線(flexible cable)4‧‧‧X光裝療器(X-ray applicator)4a‧‧‧鉸接可位移式臂(articulated displaceable arm)5‧‧‧可位移式面板(displaceable panel)6‧‧‧握把(handle)7‧‧‧顯示器(display)10‧‧‧移動式X光單元(mobile X-ray unit)