Compact rotational gantry for proton radiation systems

Abstract

Embodiments of the present invention provide a rotational gantry 100 designed to provide proton radiation therapy using a mono-energetic proton beam. The mono- energetic proton beam is transported by a beam line transport system having two or more bending magnets 125 and a plurality of quadrupole and steerer magnets 110, 120 for directing and focusing the proton beam. Energy variation of the beam is performed directly before the beam reaches an isocenter of the gantry.

Description

technical field [0001] The embodiments of the present invention mainly relate to the field of particle therapy. More specifically, embodiments of the present invention relate to compact gantry for particle therapy treatment systems. Background technique [0002] To deliver proton or particle therapy treatment to a patient, charged particles are directed at a selected angle to the patient on the treatment table. A gantry comprising beamlines and bending magnets is used to orient the charged particle beam at a selected angle relative to the patient table. Charged particles are output from the accelerator and emitted into the gantry. Gantry for particle therapy usually includes a constant conducting magnet for bending the particle beam, which requires a gantry with a diameter of the order of 8 meters. In addition, most of the weight of the bending magnet must be supported by the mechanical structure of the bench. [0003] Furthermore, the energy of the particle beam must be...

AI Technical Summary

Problems solved by technology

An alternative is to use achromatic curved magnets capable of accommodating a wide range of particle beam energies; however, this solution is very expensive and requires a large aperture dipole or combined function magnet combined with a high quadrupole magnetic field to refocus the particle beam

These large components result in large bench designs and structures

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