Compact and lightweight gantry and particle beam therapy device using the same

摘要

To provide a preferred device configuration and arrangement capable of forming a large irradiation field, miniaturizing a gantry and reducing weight of the gantry. A gantry includes a bending magnet configured to bend a beam orbit, a plurality of horizontal direction scanning magnets which are first scanning magnets configured to scan the beam orbit in a horizontal direction which is a first direction, and a vertical direction scanning magnet which is a second scanning magnet configured to scan the beam orbit in a vertical direction which is a second direction. The plurality of horizontal direction scanning magnets is arranged so that θ is equal to or less than 90° when it is assumed that a phase difference between the horizontal direction scanning magnets is 180n°±θ. The bending magnet is arranged between the plurality of horizontal direction scanning magnets.

主权项

1. A gantry comprising:
a bending magnet configured to bend a beam orbit; a plurality of first scanning magnets configured to scan the beam orbit in a first direction; and a second scanning magnet configured to scan the beam orbit in a second direction, wherein the plurality of first scanning magnets is arranged at positions where θ is equal to or less than 90° when it is assumed that a phase difference is 180n°±θ (n is a natural number), and the bending magnet is arranged between the plurality of first scanning magnets.