Auxiliary radiotherapy mattress system guided by images and breath

Abstract

The invention discloses an auxiliary radiotherapy mattress system guided by images and breath, comprising a data processor, a breath detector, an auxiliary motion mattress and an auxiliary motion mattress controller. The breath state detected by the breath detector is sent to the data processor, and the auxiliary motion mattress controller is respectively connected with the data processor and the auxiliary motion mattress. The cooperation of the system and the traditional radiotherapy device endows the traditional radiotherapy device with the function of image guiding radiotherapy. When the system is used, a relational model of the breath state and the tumor displacement is built based on the breath state sequence and the tumor anatomical structure image sequence which are collected synchronously, the breath state of the next moment is forecasted according to the current breath state and the former breath state during the radiotherapy, then the relational model of the breath state and the tumor displacement is used to calculate the predicted tumor displacement and the position of the patient is adjusted in real time to align the center of the tumor with the focus of the radioactive source, thereby reducing the injuries to the normal tissue of the patient caused by the radioactive ray.

Description

Technical field [0001] The invention belongs to the field of medical equipment auxiliary treatment equipment, and in particular relates to an auxiliary radiotherapy mattress system guided by images and breathing. Background technique [0002] During radiotherapy (radiotherapy), the patient's breathing movement causes changes in the location of lung tumors. In order to reduce the adverse effects of breathing exercise on radiotherapy, the traditional method is to expand the radiotherapy target area to fully cover the moving tumor, but this will cause certain damage to normal tissues. Then came the breath-hold and respiratory gating technologies, that is, when the patient holds breath or exhales at the end of inspiration, radiotherapy is performed on the tumor area to use the smallest possible tumor target area. For example, the US patent document titled "Method and system for physiological gating of radiation therapy" (US6690965B1) uses optical or video imaging systems to detect t...

AI Technical Summary

Problems solved by technology

Existing IGRT equipment can reduce the influence of respiratory movement on radiotherapy to a certain extent, but these IGRT equipment are expensive, 2 to 3 times the price of traditional radiotherapy equipment. Currently, only a few hospitals are equipped with IGRT equipment. , most hospitals will continue to use traditional equipment and methods to treat patients with radiotherapy, even if some hospitals are equipped with IGRT equipment, they will also use traditional radiotherapy equipment

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