Head radiotherapy device optimizing IGRT image guidance consistency

Abstract

A head radiotherapy device optimizing IGRT image guidance consistency is provided. A treatment bed (2) is installed obliquely at the front portion of a frame main body (11). The top surface of the treatment bed (2) is a seat-type structure. An imaging system (3) is installed in a host (1). A real-time scanning imaging device is added into a gamma knife roller component. The imaging surface of theimaging system and the isocentral focal point of a treatment beam are in a same plane. Through combining with a seat-type treatment bed structure design, the quality control of a body portion is improved. A patient can carry out IGRT image guidance and a radiation therapy state at a same location so as to avoid the reciprocating movement of the treatment bed. A mechanical error introduced during moving is eliminated, and the consistency of a real-time tumor image acquired during IGRT image guidance with an actual tumor shape and a location in the treatment state of the patient is ensured. Thetumor position is detected in real time so that the human body tumor position is always at a focal point position. Treatment precision is monitored in real time during a treatment process.

Description

technical field [0001] The invention relates to head radiation sitting treatment equipment with optimized consistency between real-time image-guided imaging surface and ray focus point, which belongs to A61N5 / 10 gamma ray therapy or particle irradiation therapy equipment technology in IPC classification, especially the one that optimizes the consistency of IGRT image guidance Head radiation therapy equipment. Background technique [0002] Radiation therapy for tumors is a local treatment method that uses radiation to treat tumors. Radiation includes α, β, γ rays produced by radioactive isotopes and x-rays, electron beams, proton beams and other particle beams produced by various x-ray therapy machines or accelerators. About 70% of cancer patients need radiotherapy in the course of cancer treatment, and about 40% of cancers can be cured with radiotherapy. The role and status of radiotherapy in tumor treatment has become increasingly prominent, and it has become one of the m...

AI Technical Summary

Problems solved by technology

Since none of the currently known head gamma knives can achieve real-time treatment, that is, when the radiation hits the tumor, since the image-guided system (IGRT) has a fixed distance from the focus of the radiation, it is impossible to ensure that the treatment can be performed in a timely manner. To see if the radiation hits the tumor, especially during treatment, if the patient moves due to discomfort, then the tumor moves away from its original position, so that the radiation cannot hit the tumor, causing the radiation to miss

[0021] Even if the current scalpel is equipped with IGRT, it is only at the beginning of the treatment to determine whether the positioning state of the patient is consistent with the setting state, but once the treatment starts, if the patient moves due to discomfort, the treatment table must be withdrawn if the correction is to be made Go to the position of CBCT (IGRT) for film correction, which cannot achieve real-time performance, and the effect of CBCT (IGRT) is greatly reduced

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