Title:
RADIOGRAPHIC IMAGE DETECTION APPARATUS, RADIOGRAPHY APPARATUS, AND RADIOGRAPHY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/070661
Kind Code:
A1
Abstract:
The invention accurately detects radiation doses and generates more precise phase contrast radiographs. The X-ray imaging system (10) is provided with a first grating (31), a second grating (32) having a period that substantially coincides with the period of the radiographic pattern formed by radiation passing through the first grating, a radiographic image detector (30) that detects the radiograph masked by the second grating, and a data processing unit (22) that processes the image data acquired by the radiographic image detector. The subject is disposed between the radiation source (11) and the first grating, the radiation irradiation time is made to be constant, and imaging is performed multiple times placing the second grating at positions relative to the radiographic image such that the phases differ from each other. Brightness is corrected for the image data acquired by the radiographic image detector in each imaging on the basis of the radiation dose detected by a radiation dose-detecting pixel during said imaging.
Inventors:
TADA TAKUJI
ISHII HIROYASU
ISHII HIROYASU
Application Number:
PCT/JP2011/077260
Publication Date:
May 31, 2012
Filing Date:
November 25, 2011
Export Citation:
Assignee:
FUJIFILM CORP (JP)
TADA TAKUJI
ISHII HIROYASU
TADA TAKUJI
ISHII HIROYASU
International Classes:
A61B6/00; A61B6/06; G01T1/17; G01T7/00; G03B42/02
Domestic Patent References:
| WO2008102598A1 | 2008-08-28 |
Foreign References:
| JP2009201885A | 2009-09-10 | |||
| JP2004290615A | 2004-10-21 |
Attorney, Agent or Firm:
TAKAMATSU Takeshi et al. (JP)
Takamatsu 猛 (JP)
Takamatsu 猛 (JP)
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Claims: