Title:
RADIOGRAPHIC IMAGING SYSTEM AND CONTROL METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2012/057023
Kind Code:
A1
Abstract:
The present invention enhances the precision of corrected data acquired in pre-imaging. When an imaging site in a patient to be imaged is selected, a first X-ray dose (I1) is computed on the basis of the X-ray transmittance of the imaging site. A determination is made as to whether pixel data are saturated in the case that the first X-ray dose (I1) is a multiple of α (for example, 100). When the pixel data are not saturated, the α-multiple of the first X-ray dose (I1) is used as a second X-ray dose (I2). When the pixel data are saturated, the α/ν multiple (where ν is a positive number 2 or greater) of the first X-ray dose (I1) is used as the second X-ray dose (I2). Pre-imaging is performed with the exposure conditions being determined on the basis of the second X-ray dose (I2). In the case that the second X-ray dose (I2) is determined by multiplying the first X-ray dose (I1) by α/ν, X-ray irradiation and image detection are executed ν times or more at each scanning position of pre-imaging.
Inventors:
TADA TAKUJI (JP)
Application Number:
PCT/JP2011/074294
Publication Date:
May 03, 2012
Filing Date:
October 21, 2011
Export Citation:
Assignee:
FUJIFILM CORP (JP)
TADA TAKUJI (JP)
TADA TAKUJI (JP)
International Classes:
A61B6/00; G03B42/02
Domestic Patent References:
| WO2008102685A1 | 2008-08-28 | |||
| WO2004058070A1 | 2004-07-15 |
Foreign References:
| JP2006242903A | 2006-09-14 | |||
| JPH11311673A | 1999-11-09 | |||
| JP2010158257A | 2010-07-22 | |||
| JP2008043430A | 2008-02-28 | |||
| JP2000504179A | 2000-04-04 | |||
| JP2003037777A | 2003-02-07 | |||
| JPH10262961A | 1998-10-06 |
Attorney, Agent or Firm:
KOBAYASHI, KAZUNORI (JP)
Kazunori Kobayashi (JP)
Kazunori Kobayashi (JP)
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Claims: