A Particle Beam Therapy Head Device for Obtaining a Small Beam Spot

Abstract

The invention provides a design scheme of a particle beam treatment head device for obtaining small beam spots. The particle beam treatment head device includes: a scanning iron for scanning and expanding the particle beam, a vacuum pipe for transmitting the scanned particle beam, and an installation Radiation protection equipment on the vacuum tube, the design also includes some necessary beam measurement equipment and modulation equipment. The particle beam therapy head device according to the present invention extends the vacuum tube from the scanning iron to the vicinity of the target body, and moves some essential beam detection equipment back. The device maintains the transmission of the particle beam in a low vacuum environment, effectively reduces the scattering effect of the beam and the air, and significantly reduces the influence of the scattering angle of the beam and the detection equipment on the beam spot size, thereby maintaining a small Beam spot size.

Description

technical field [0001] The invention belongs to the medical field, in particular to a particle beam treatment head device. Background technique [0002] Particle beams are often used to treat cancer in the medical field. Particle beams can kill tumor cells in the target area to the greatest extent, while minimizing damage to healthy tissues around the tumor target area, reducing the chance of complications in normal tissues, and improving the efficacy of treatment. Effect. For particle beam cancer treatment, it is generally necessary to convert the beam current into a uniform expanded beam. There are generally two methods to obtain a uniform extended beam, uniform scanning and point scanning. For uniform scanning, in order to obtain a uniform irradiation field, it is generally desired that the beam has a larger beam spot at the isocenter (ie, the central reference point of the tumor position). When the point scanning method is used, in order to achieve a good therapeutic ...

AI Technical Summary

Problems solved by technology

In existing devices, the beam will scatter with air and equipment, resulting in an enlarged beam spot, which cannot maintain a small beam spot, so it is difficult to use for spot scanning

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