Title:
RADIOGRAPHY DEVICE AND RADIOGRAPHY METHOD
Document Type and Number:
WIPO Patent Application WO/2013/027536
Kind Code:
A1
Abstract:
The objective of the present invention is to reduce unwrapping errors and to improve offset cancellation. An X-ray image detector (13) detects X-rays which are emitted from an X-ray source (11) and pass through a subject (H), a first grating (21) and a second grating (22), and generates image data. A phase differential image generating section (40) generates a phase differential image on the basis of the image data. A suitable/unsuitable region detector (42) detects unsuitable regions in which unwrapping errors tend to occur in the phase differential image, and sets the other regions as suitable regions. A first unwrapping section (43) unwraps only the suitable regions of the phase differential image. A second unwrapping section (44) unwraps the phase differential image (offset image) obtained by the phase differential image generating section (40) without disposing the subject (H). An offset processing section (45) subtracts the unwrapped offset image from the unwrapped phase differential image.
Inventors:
TADA TAKUJI (JP)
Application Number:
PCT/JP2012/069136
Publication Date:
February 28, 2013
Filing Date:
July 27, 2012
Export Citation:
Assignee:
FUJIFILM CORP (JP)
TADA TAKUJI (JP)
TADA TAKUJI (JP)
International Classes:
A61B6/00; G01B11/00; G01N23/04
Domestic Patent References:
| WO2004058070A1 | 2004-07-15 |
Foreign References:
| JP2011045655A | 2011-03-10 | |||
| JP2008082869A | 2008-04-10 | |||
| JP2005152500A | 2005-06-16 |
Other References:
SHIGESUMI KUWASHIMA: "Jitsujikan Sanjigen Gazo Keisoku (Tokushu Hikari Sanjigen Keisoku Gijutsu no Genjo to Shorai Doko)", OPTICAL AND ELECTRO-OPTICAL ENGINEERING CONTACT, vol. 39, no. 2, February 2001 (2001-02-01), pages 92 - 102
Attorney, Agent or Firm:
KOBAYASHI, KAZUNORI (JP)
Kazunori Kobayashi (JP)
Kazunori Kobayashi (JP)
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Claims: