Patent ID: 8410447
Filing Date: 2013-04-02
Classification: A61N

Abstract:
1. A particle radiotherapy apparatus comprising a detector ring constructed of an annular arrangement of radiation detectors formed by laminating, in one direction, scintillators with planes of incidence for receiving radiation and converting the radiation into fluorescence, light guides for receiving and transmitting the fluorescence, and photodetectors for detecting the fluorescence, and in addition thereto, an elongated top board inserted in an opening of the detector ring, and a particle beam emitting device for emitting a particle beam, the particle radiotherapy apparatus further comprising: a detector ring tilting device for reversibly tilting the detector ring relative to the top board; wherein the detector ring tilting device is arranged to tilt an upper end of the detector ring in one direction in a direction of extension of the top board, and to tilt a lower end of the detector ring in a direction opposite to the one direction in the direction of extension of the top hoard.