Particle-beam treatment system

Details Particle-beam treatment system Particle-beam treatment system

2007-10-11

2009-08-25

Nguyen, Kiet T (Department: 2881)

Radiant energy

Irradiation of objects or material

Ion or electron beam irradiation

C378S152000

Reexamination Certificate

active

07579608

ABSTRACT:
Provision is made for a particle-beam treatment system in which, even during particle-beam irradiation, the shape of a multileaf collimator is monitored. The particle-beam treatment system, in which multi-layer conformal irradiation is performed while the setting of the shape of the multileaf collimator in an irradiation head is changed during particle-beam irradiation, is provided with an optical shape-monitoring unit mounted attachably and detachably in the snout portion at the downstream side of the multileaf collimator, the optical shape-monitoring unit having a shape-monitoring mirror, opposing the multileaf collimator, for monitoring the shape of the multileaf collimator; a video camera for shooting the multileaf-collimator shape reflected by the shape-monitoring mirror; and an image monitor for displaying an image of the video camera that shoots the shape of the multileaf collimator.

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