Precise radiotherapy system based on four-dimensional adaptive digital tracking conformal intensity-modulated focusing medical electron accelerator

Abstract

The invention provides a precise radiotherapy system based on a four-dimensional adaptive digital tracking conformal intensity-modulated focusing medical electron accelerator, and the system comprises a radiotherapy planning system, a radiotherapy projection system, a digital tracking system, a four-dimensional six-axis collaborative treatment bed, a three-dimensional four-axis double-digital X-ray perspective system, an integrated control system, and an auxiliary treatment system. All the systems are connected with one another, a digital tracking model of a tracking target is established according to data collected by the three-dimensional four-axis double-digital X-ray perspective system and the tracker at the same time, and the radiotherapy projection system is connected with the three-dimensional four-axis double-digital X-ray perspective system under the cooperation of the radiotherapy planning system, the digital tracking model of the tracking target, the tracker, the four-dimensional six-axis cooperative treatment bed, the integrated control system and the auxiliary treatment system. The precise radiotherapy system is precise in radiotherapy plan, precise in radiotherapy projection conformity, precise in radiotherapy projection focusing, precise in radiotherapy projection target tracking, precise in target dose, uniform in target dose distribution, and capable of enabling the dose outside the target boundary to decline in a cliff mode. And a lethal dose can be projected to the target at one time, and tissues and organs outside the target are individually protected from radiation injury.

Description

technical field [0001] The invention belongs to the field of precise radiotherapy for medical tumors, and in particular relates to a precise radiotherapy system based on a four-dimensional adaptive digital tracking conformal intensity-modulated focusing medical electron accelerator, hereinafter referred to as the present invention. Background technique [0002] Radiation therapy is one of the main treatments for cancer. About 70% of tumor patients need to receive radiotherapy to improve the clinical efficacy of comprehensive treatment. The backward technology of radiotherapy equipment, the low comprehensive net income of radiotherapy patients commonly known as roasting electricity, and the high number of serious complications make both doctors and patients feel grumpy. Radiotherapy equipment must develop synchronously with the progress of modern science and technology. [0003] The biggest problems with existing radiation therapy equipment are: [0004] 1. Target tracking...

AI Technical Summary

Problems solved by technology

The pain point of the current situation is that there is no target tracking system, or image tracking, or image tracking plus respiratory gating, which always makes the target dose inaccurate, the target dose is uneven, the boundary of the target is expanded and expanded, and the normal tissues and organs outside the target are heavily dosed. Serious complications are caused by the irradiation of useful beams; image tracking has the risk of fatal radiation accidents caused by the blocking of the imaging interval by the treatment institution so that the image receiver has no target image, which is referred to as blinding and crashing the system; image tracking is to read out the image first, and then Analyzing the useful information in the image and then tracking the target is always time-lapse, and the accuracy of the target cannot be guaranteed; the dose applied to normal tissues and organs by image tracking is about 1Gy, which is enough to cause damage and canceration

[0005] 2. Projection: The projection must be precisely conformal focus, accurate target dose and evenly distributed

The pain point of the current situation is either 1-7 fixed fields, or helical beam irradiation with no differential irradiation in the projection area. The fixed field irradiation makes the target dose distribution in several incident directions. The edge dose is high, the skin and superficial tissue dose is large, and the target dose Uneven distribution; helical beam irradiation is affected by congenital defects of multi-source beam focusing on one point of cone beam, and the target dose cannot be evenly distributed, and normal tissues and organs outside the target cannot be individually protected by indiscriminate irradiation, resulting in serious complications

[0006] 3. The degree of intelligence is low. Dozens of irradiations and hundreds of placements that require the deep participation of physical engineers cannot guarantee accurate irradiation at all, and the projections cannot be conformed to the target in real time.

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