Title:
放射線撮影システム及び放射線画像生成方法
Document Type and Number:
Japanese Patent JP5331940
Kind Code:
B2
Abstract:
In a radiographic system and a radiographic image generating method that generate a phase contrast image and an absorption image of an subject, the absorption image in which density irregularity is removed or reduced is generated on the basis of a plurality of pieces of image data obtained for generating the phase contrast image. A X-ray imaging system 10 includes a first absorption type grating 31, a second absorption type grating 32 that has a cycle substantially matched with a pattern cycle of a radiographic image formed by radiation that passes through the first absorption type grating and is located at a plurality of different relative positions with respect to the radiographic image, an FPD 30 that detects the radiographic image masked by the second absorption type grating located at each relative position to obtain a plurality of pieces of image data, a phase contrast image generating unit 27 that generates a phase contrast image on the basis of a plurality of pieces of subject image data obtained by the FPD when imaging is performed with an subject being placed, in an advancing direction of the radiation that passes through the first grating, in front of the first grating or between the first grating and the grating pattern, and an absorption image generating unit 28 that generates an absorption image on the basis of the plurality of pieces of subject image data. Here, the absorption image generating unit performs a shading correction for the absorption image.
More Like This:
Inventors:
Hiroyasu Ishii
Application Number:
JP2012540879A
Publication Date:
October 30, 2013
Filing Date:
October 25, 2011
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
A61B6/00; G01T7/00
Foreign References:
| WO2008102685A1 | 2008-08-28 |
Other References:
JPN6013031982; 河端克幸: 'Ｘ 線Ｔａｌｂｏｔ 干渉計におけるＶｉｓｉｂｉｌｉｔｙ 低下のイメージング応用' 東京大学学術機関リポジトリ , 20100324, 東京大学学術機関リポジトリ
Attorney, Agent or Firm:
Takeshi Takamatsu
Toshiyuki Ozawa
Hasegawa Hiromichi
Toshiyuki Ozawa
Hasegawa Hiromichi