Electron linear accelerator and mri-guided x-ray radiotherapy machine

Abstract

The invention relates to an accelerator and an MRI-guided radiotherapy machine, the accelerator is provided with a magnetron, the magnetron includes a tube core and a magnet, the magnet adopts the main magnet of the MRI system, and the tube core is arranged in the MRI system generated by the main magnet In the main magnetic field of the main magnetic field, and the axial direction of the tube core is along the magnetic field line direction of the main magnetic field; the radiotherapy machine guided by the MRI is composed of a radiotherapy machine and an online magnetic resonance imaging device, and the radiotherapy machine is provided with a linear accelerator for accelerating charged particles and / or Or cyclotrons, linear accelerators and cyclotrons are equipped with magnetrons, and online magnetic resonance imaging equipment is equipped with main magnets for forming the MRI main magnetic field. A controlled constant magnetic field, the linac is located outside the main magnet. The accelerator of the present invention is more compact and can generate higher-energy electron beams; the radiotherapy machine is more compact and can quickly and accurately deliver beams to designated irradiation positions.

Description

technical field [0001] The invention relates to an accelerator and an MRI-guided radiotherapy machine, belonging to the technical field of medical devices. Background technique [0002] A magnetron is a device used to generate electromagnetic waves. Usually the die consists of two concentric metal cylinders, the central cylinder is the cathode, and the outer layer is the anode. There are a series of resonant cavities on the anode. These resonators communicate with the cavity between the two cylinders and are in a vacuum state. The entire cylinder is placed in a magnetic field, and the direction of the magnetic field is along the axis of the cylinder. When the cathode is heated, free electrons are generated near the cathode. These electrons move along the curve from the cathode to the anode under the joint action of the electric field and the magnetic field, and emit electromagnetic waves at the same time. Electromagnetic waves further interact with electrons to form a s...

AI Technical Summary

Problems solved by technology

[0007] Sydney's laboratory system adopts the design of rotating patients and treatment beds. Due to the deformation of human soft tissues, it brings greater difficulty to the positioning and tracking of tumors. In addition, due to the physical fitness of patients, it is not suitable for rotating patients in many cases. Patient is not humane to patient

[0008] It can be seen that the existing MRI-guided radiotherapy machines generally have technical problems that the movable parts are not compact enough, the tracking and positioning operation accuracy is not high during treatment, and the accelerator beam intensity is not high.

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