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MULTILEAR COLLIMATOR, PARTICLE BEAM THERAPY DEVICE AND THERAPY PLANNING DEVICE
专利权人:
发明人:
申请号:
EP10856134.1
公开号:
EP2572755A1
申请日:
2010.08.17
申请国别(地区):
EP
年份:
2013
代理人:
摘要:
The objective thereof is to obtain a multi-leaf collimator and a particle beam therapy system in which a high-contrast irradiation field can be formed without undergoing the effect of a penumbra. There are provided a leaf row (5C) in which a plurality of leaf plates (5L) are arranged in the thickness direction of the row (5C) in such a way that the respective one end faces (EL) of the leaf plates (5L) are trued up and a leaf plate drive mechanism (5D) that drives each of the plurality of leaf plates (5L) in such a way that the one end face (EL) approaches or departs from a beam axis (XB). In each of the leaf plates (5L), a facing side (PL) facing a leaf plate that is adjacent to that leaf plate in the thickness direction is formed of a plane (Psa) including a first axis (Asa) on the beam axis (XB) the leaf plate drive mechanism (5D) drives the leaf plate (5L) along a circumferential orbit (OL) around the second axis (Asb), on the beam axis (XB), that is perpendicular to the beam axis (XB) and the first axis (Asa).
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