Title:
放射線治療装置
Document Type and Number:
Japanese Patent JP2009534135
Kind Code:
A
Abstract:
A radiotherapeutic apparatus comprises a source able to emit a beam of therapeutic radiation along a beam axis, a multi-leaf collimator arranged to collimate the beam to a desired shape, wherein the source is rotatable about a rotation axis that is substantially orthogonal and intersects with the beam axis thereby to describe an arc around that axis, and further comprises a control means able to control the dose/time rate of the source, the rotation speed of the source, and the multi-leaf collimator position. The control means is arranged to control the source in accordance with a treatment plan over first and second arc-segments such that at least the multi-leaf collimator changes shape at a different rate per degree in the second arc-segment as to the first arc-segment.
Inventors:
Kevin, brown
Ralph, Streamer
Pole, box oar
Duncan, Bourne
Ralph, Streamer
Pole, box oar
Duncan, Bourne
Application Number:
JP2009506917A
Publication Date:
September 24, 2009
Filing Date:
April 27, 2006
Export Citation:
Assignee:
ELEKTA AB
International Classes:
A61N5/10
Domestic Patent References:
| JPS5683362A | 1981-07-07 | |||
| JPH09239044A | 1997-09-16 | |||
| JP2004275636A | 2004-10-07 |
Attorney, Agent or Firm:
Kenji Yoshitake
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Yukihiro Hotta
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Yukihiro Hotta