Accelerator control method and device for lung tumor and radiotherapy equipment

The invention discloses an accelerator control method and device for a lung tumor and radiotherapy equipment, and the method comprises the steps: combining a three-dimensional collection device with an accelerator radiotherapy system, collecting the real-time body surface three-dimensional data of a patient in real time, carrying out the registration with the three-dimensional CT data of different phases, finding out the maximum correlation phase, and determining the position of the tumor. And when the tumor moves to a set threshold range, beam output treatment is carried out, otherwise, beam output is paused, and the accuracy of treatment positioning is ensured. A traditional gating treatment mode is changed, the maximum coincidence phase is found through direct matching of real-time body surface three-dimensional data and three-dimensional CT data, the tumor position is determined, and the accuracy of tumor positioning precision is improved. Meanwhile, compared with a traditional mode that the gating thresh