Radiotherapeutic apparatus in operation

Abstract

A radiotherapeutic apparatus using high-energy electron beams to radiate the bed of removed tumor and the residual tumor tissue in excision operation features that the CT or MRI 3D imaging software is used to determine the position of tumor focal, an analog technique is used to determine the incident direction, angle and position of electron beam, a radiotherapeutic plan system is used to calculate the radiation dosage, and a laser locator on the radiating head with straight-line electron accelerator is used to align the electron beam to the tumor focal.

Description

Technical field: [0001] The present invention relates to a new type of radiotherapy device in operation, which belongs to a new type of medical equipment, more specifically, it is a tumor radiotherapy device, which utilizes high-energy electron beams to irradiate the resected tumor bed and residual tumor tissue during the operation, so as to Thoroughly cure local tumors and prevent tumors from spreading to distant places. Background technique: [0002] Intraoperative radiotherapy (Intraoperative radiotherapy) is a new technology of tumor radiotherapy. It is during the operation. After the surgeon has removed the local tumor, he applies radiation to irradiate the tumor bed or the remaining tumor through the surgical field of view. It is widely used in the combined treatment of head and neck tumors, chest, abdomen, and pelvic tumors. [0003] Intraoperative radiotherapy began in the 1980s. Medical linear accelerators were used during surgery to directly irradiate the tissue s...

AI Technical Summary

Problems solved by technology

Even so, there are still defects in the above-mentioned technology, because in order to meet the purpose of greatly reducing weight and volume, the special electron accelerating tube design that is carried out obviously reduces the radiation energy that can be achieved, and can only reach 4 ~ 8Mev, which is very important for killing The tumor cells in many deep tissues are far from enough. Since the above-mentioned device uses a mechanical arm to support the radiation head of the mobile electron linear accelerator, and the weight of the radiation head that can be driven by the mechanical arm is limited, this defect is the above-mentioned The device is difficult to overcome, and in the process of clinical promotion, this is an extremely important key. This defect will inevitably affect the popularization and promotion of intraoperative radiotherapy technology

[0007] Secondly, due to the use of a specially designed electron linear accelerator, it increases the difficulty and cost of manufacture, and the production of this device cannot reach the scale of mass production, and the quantity is very small. Therefore, the price of the above-mentioned device remains high. impact on clinical

[0008] Although the above-mentioned device significantly reduces the volume and weight of the electron linear accelerator, the weight of the above-mentioned device is still as high as 2,500 pounds. For the flexible movement of 2,500 pounds, the manufacturing cost of the multi-dimensional and multi-directional kinematic manipulator must be very expensive. The high price of radiotherapy equipment has obviously affected the promotion of this technology in clinical hospitals

[0009] Another obvious defect of the above-mentioned devices is that although they use extremely precise multi-dimensional and multi-directional motion manipulator technology, in clinical applications, they lack three-dimensional stereotaxic technology and devices, and only rely on the naked eyes of clinical surgeons and radiologists. Observation is used to determine the location, neither CT or MRI images with high-precision positioning are used to assist doctors, nor do doctors have complete tools to determine the location, angle, direction, and relationship with surrounding normal tissues of the lesion, as well as the impact on the surrounding important organs. Determine the optimal path, direction, and angle of electron beam incidence in intraoperative radiotherapy, as well as the electron beam emission power and emission time determined accordingly

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