Title:
X-RAY CT DEVICE, IMAGE PROCESSING DEVICE, AND IMAGE RECONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/129433
Kind Code:
A1
Abstract:
In the present invention, in order to provide an X-ray CT device capable of reconstructing, at high speed, a tomographic image with little unevenness in image quality from projection data obtained by irradiating a subject with an X-ray, this X-ray CT device is characterized by comprising: a reverse projection phase width setting unit which sets, in each tomographic image, a reverse projection phase width, which is the angular width of the projection data to be used for reconstruction; and a view weight calculation unit which calculates, at each pixel position in the tomographic image, a view weight, which is a weight coefficient by which the projection data within the reverse projection phase width is to be multiplied, and which is a function of a view angle.
Inventors:
SUZUKI TSUYOSHI (JP)
TERAMOTO FUYUHIKO (JP)
AOKI YUKO (JP)
GOTO TAIGA (JP)
TERAMOTO FUYUHIKO (JP)
AOKI YUKO (JP)
GOTO TAIGA (JP)
Application Number:
PCT/JP2016/052881
Publication Date:
August 18, 2016
Filing Date:
February 01, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
A61B6/03
Domestic Patent References:
| WO2013161443A1 | 2013-10-31 | |||
| WO2005122901A1 | 2005-12-29 | |||
| WO2005077278A1 | 2005-08-25 |
Foreign References:
| JP2013000479A | 2013-01-07 | |||
| JP2012034972A | 2012-02-23 | |||
| JP2009101086A | 2009-05-14 | |||
| JP2004188163A | 2004-07-08 | |||
| JPH119582A | 1999-01-19 |
Attorney, Agent or Firm:
TAMURA, Naotaka (JP)
Naotaka Tamura (JP)
Naotaka Tamura (JP)
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