Precise robot radiotherapy system under guidance of MRI

Abstract

The invention relates to a precise robot radiotherapy system under guidance of MRI. The system comprises an x/gamma-ray source and on-line magnetic resonance imaging equipment. The on-line magnetic resonance imaging equipment is provided with a split type/cylindrical superconducting magnet for generating a magnetic field. The x/gamma-ray source is installed on a mechanical arm of a robot and is driven by the robot to move, so that a radiotherapy beam emitted by the x/gamma-ray source can enter a focus imaging region between two magnetic poles of the split type superconducting magnet or inside the cylindrical superconducting magnet through the gap between the magnetic poles and/or holes in the magnetic poles. According to the invention, under guidance of the open type magnetic resonance imaging equipment, a mechanical arm or mechanical arms of one or more robots is/are used for operating one or a plurality of treatment heads to irradiate x/gamma rays on tumor focuses, so that the x/gamma ray therapeutic machine can have more treatment functions for patients, a fast treatment speed, a better treatment capacity, and a good treatment effect.

Description

technical field [0001] The invention relates to an MRI (Magnetic Resonance Imaging)-guided robotic precision radiotherapy system, in particular using an electron linear accelerator / 60 A radiotherapy system for Coγ-rays belongs to the technical field of medical equipment. Background technique [0002] The electron linear accelerator uses electrons with a certain energy to interact with the microwave electric field to obtain higher energy and form an electron beam with a certain energy. The electron beam is directly drawn from the electron gun to bombard the target area such as the tumor, which is called electron beam. X-ray radiotherapy, which bombards heavy metal targets (such as tungsten targets) with electron beams, produces bremsstrahlung, emits X-rays, and irradiates target areas such as tumors with X-rays, which is X-ray radiotherapy, which can produce X-rays Radiation therapy equipment with beams of radiation may be referred to as X-ray sources. Similarly, gamma-ray...

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Problems solved by technology

[0003] To ensure that the X/γ-ray beam is irradiated on the target area, certain imaging equipment is required for real-time guidance. Most of the existing image guidance methods in radiotherapy use cone beam CT (CBCT) or planar X-ray imaging equipment for guidance. Here It is collectively referred to as X-ray imaging-guided radiotherapy, and its disadvantages are: (1) From the beginning of diagnosis to the end of treatment, the patient receives X-ray scans of X-ray imager multiple times, and not only the lesion area, but also the non-lesion area will receive additional radiation therapy. The cumulative dose of ionizing radiation has far exceeded the annual allowable dose for normal people, which can cause cancer or new disease-causing problems in patients, especially women and children; (2) The current X-ray imaging-guided radiotherapy , is not real-time, it is difficult to track the treatment situation in three-dimensional space in real time, and it is necessary to use other auxiliary means to establish three-dimensional space coordinates to track the treatment situation, such as the combination of invasive methods of gold

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