A compact type proton beam energy and energy spread control structure

A technology for controlling structures and proton beams, applied in X-ray/γ-ray/particle irradiation therapy, radiation therapy, electrical components, etc., can solve problems such as many side effects and large normal tissue damage, and achieve cost reduction and floor space. The effect of reducing the height of the air gap and reducing the number

Active Publication Date: 2017-08-04
HEFEI CAS ION MEDICAL & TECHNICAL DEVICES CO LTD
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  • Application Information

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Problems solved by technology

At present, traditional radiotherapy has relatively large damage to normal tissues and many side effects

Method used

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  • A compact type proton beam energy and energy spread control structure
  • A compact type proton beam energy and energy spread control structure
  • A compact type proton beam energy and energy spread control structure

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Embodiment Construction

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] Such as figure 1 As shown, the beam energy and energy divergence control structure 3 has a cyclotron 1 and an energy degrader 2 at its front end. The fixed energy beam output by the cyclotron 1 passes through a wedge-shaped graphite body, and the wedge-shaped graphite body can be separated and approached. The thickness of the graphite is changed by means of different thicknesses of the graphite. After the beam passes through different thicknesses of graphite, its energy decreases and the emittance becomes larger; Fo...

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Abstract

The invention discloses a compact type proton beam energy and energy spread control structure composed of two rectangular dipole magnets, two defocused quadrupole magnets, two focused quadrupole magnets, a beam measuring system, a selection slit and a vacuum tube. The two rectangular dipole magnets are arranged in a symmetrical manner at 45 degrees. One rectangular dipole magnet is connected in turn by means of the vacuum tube with one defocused quadrupole magnet, one focused quadrupole magnet, the beam measuring system and the selection slit, and then sequentially connected to the other defocused quadrupole magnet, the other focused quadrupole magnet and the other rectangular dipole magnet. The compact type proton beam energy and energy spread control structure of the invention can safely and efficiently transmit the mass beam with a transmission divergence of less than 2% and energy of 70-235MeV according to the treatment requirement, and realize the beam energy and energy spread control structure composed of the two rectangular dipole magnets arranged in a symmetrical manner at 45 degrees and the four quadrupole magnets; the compact type proton beam energy and energy spread control structure has characteristics of safety, high efficiency and high precision, and promotes the development and wide application of proton treatment technology in the future.

Description

technical field [0001] The invention belongs to the beam transmission field of a proton therapy system of a medical device, and in particular relates to a compact proton beam energy and energy divergence control structure. Background technique [0002] Since Wilson proposed the application of proton therapy for cancer in 1946, extensive proton therapy research work has begun. The basic principle is the same as that of X-rays, which rely on the ionization of particles and rays to transfer energy to cancer cells, and then kill cancer cells. die. At present, traditional radiotherapy has relatively large damage to normal tissues and many side effects. However, proton therapy is effective and has few side effects. Its greatest advantage lies in its excellent dose distribution. Proton therapy is more convenient for clinicians to accurately control the dose injected into the tumor, reducing damage to surrounding normal tissues, thereby reducing the chance of side effects. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H7/00H05H7/04A61N5/10
CPCA61N5/10A61N5/1048A61N2005/1087H05H7/001H05H7/04H05H2007/004H05H2007/005
Inventor 宋云涛郑金星曾宪虎李明江峰张俊生张午权
Owner HEFEI CAS ION MEDICAL & TECHNICAL DEVICES CO LTD
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