Medical electron linear accelerator

Abstract

Disclosed is a medical electron linear accelerator. The medical electron linear accelerator comprises a high-voltage pulse modulator, a microwave power source, a microwave transmission mechanism and an acceleration tube; the high-voltage pulse modulator is connected with the microwave power source; the microwave transmission mechanism is connected with the microwave power source and the acceleration tube separately; the microwave power source is fixedly mounted on a rack; the microwave transmission mechanism comprises a circulator or an isolator connected with the microwave power source, and multiple waveguides, wherein the multiple waveguides are connected in sequence through multiple waveguide rotary heads; the included angle between any two waveguides can be adjusted by the waveguide rotary heads optionally; the circulator or the isolator is connected with the first waveguide of the multiple waveguides; the acceleration tube is connected with the last waveguide of the multiple waveguides; and adjustment and movement of the space position of the acceleration tube can be realized under the driving of the multiple waveguides.

Description

technical field [0001] The invention relates to an electron linear accelerator tube, in particular to a medical electron linear accelerator using the electron linear accelerator tube as a radiation source. Background technique [0002] Modern medicine is more and more widely using electron linear accelerators to treat tumors, and the accelerated electron energy ranges from 4MeV to 20MeV. The electronic linear accelerator tube system consists of a high-voltage pulse modulator, a microwave power source (magnetron or klystron), a microwave transmission system (usually including a circulator and various waveguides), and an accelerating tube. Through the mechanical design of the whole system, the control of the spatial position of the accelerating tube is realized, and then the spatial position and irradiation direction of the rays used in the treatment are controlled. [0003] The accelerating tube is usually installed on a rotating frame, and the radiation direction can be adj...

AI Technical Summary

Problems solved by technology

However, in this device, the entire treatment head includes the power source and the acceleration tube device, and the weight is as high as 150kg, which makes the head very heavy and has high requirements for the mechanical support part. Control accuracy is also reduced

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