Title:
放射線治療装置制御装置、放射線治療装置制御装置の処理方法及びそのプログラム
Document Type and Number:
Japanese Patent JP5675424
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a radiotherapy apparatus controller allowing enhancement of a detection speed of a marker in a radiation perspective image generated by irradiating radiation to a radiographic subject embedded with the marker.SOLUTION: One luminance difference of luminance differences between a luminance of a certain pixel and luminances of two opposite pixels positioned at a prescribed distance not less than half of a line width of the marker from the certain pixel in the radiation perspective image is calculated in a plurality of different directions passing the certain pixel, information about the largest luminance difference of them is specified about the pixel, and each-pixel luminance difference information holding the information about the luminance difference about the plurality of pixels in the radiation perspective image is created. The pixels decided to be noise of the pixels each having the luminance value not less than a prescribed threshold value are removed in the each-pixel luminance difference information, the pixels that are a marker candidate are specified, the pixels that are the marker candidate are classified into a plurality of areas by combination of the adjacent pixels, and the pixels belonging to an area whose range is not less than a threshold value are specified as the pixels indicating the marker.
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Inventors:
山田 昌弘
▲高▼橋 邦夫
▲高▼橋 邦夫
Application Number:
JP2011038226A
Publication Date:
February 25, 2015
Filing Date:
February 24, 2011
Export Citation:
Assignee:
三菱重工業株式会社
International Classes:
A61N5/10; A61B6/00; A61B6/12
Attorney, Agent or Firm:
Woods Ryuichiro
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma