Medical linear accelerator and control method thereof

Abstract

The invention relates to a medical linear accelerator. The medical linear accelerator comprises a fixed frame, a treatment bed and a rotation device, an entrance/exit hole corresponding to the position of the treatment bed is arranged in the fixed frame, the rotation device is composed of first and second rotation frames, the end portion of the first rotation frame is provided with a central holein consistent with the entrance/exit hole, and the axis of the entrance/exit hole and the axis of an assembling bearing of the first rotation frame are coaxial with the rotation axis of the first rotation frame; the second rotation frame is connected with the first connection frame, the rotation axis of the first rotation frame is vertically intersected with the rotation axis of the second rotation frame; and the second rotation frame is provided with a beam generation device and a beam limiting device. According to the medical linear accelerator, the treatment bed does not move during work, abeam can be input to the human body at any angle in the 3D space, and the accelerator has an automatic isocenter verification function and an automatic beam verification function.

Description

technical field [0001] The invention relates to a medical linear accelerator and a control method thereof, in particular to a medical linear accelerator based on double rotating racks, which belongs to medical equipment for radiotherapy. Background technique [0002] Radiation therapy is one of the most important treatments for tumors, and the medical linear accelerator is the most widely used device for radiation therapy. [0003] In terms of radiation therapy methods, there are general radiation therapy, intensity-modulated radiation therapy, image-guided radiation therapy, stereotactic radiation therapy and so on. [0004] From a technical point of view, medical electronic medical linear accelerators mainly include the following types: the traditional accelerator represented by the American Varian company Truebeam, its main feature is that the rotating frame is a cantilever beam structure, rotating frame, beam limiting device And the treatment bed can rotate around the i...

AI Technical Summary

Problems solved by technology

Since the treatment couch needs to move during this process, this has two disadvantages: First, the positioning accuracy of the treatment couch is lower than that of other mechanisms. Second, the patient is on the treatment bed. During the treatment process, the treatment bed has to be rotated repeatedly for many times, which will have adverse effects on the comfort of the patient and the treatment accuracy.

However, considering that the mechanical arm may injure the human body or affect human psychology during the movement, it does not have the function of beam therapy during continuous movement, which limits its application scenarios

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