Title:
IMAGE PROCESSING DEVICE FOR MEDICAL USE AND IMAGE PROCESSING METHOD FOR MEDICAL USE
Document Type and Number:
WIPO Patent Application WO/2012/147471
Kind Code:
A1
Abstract:
With respect to projection data covering a plurality of sites, in order to create a medical image in which a uniform noise reduction effect is achieved for all sites within the projection data, an arithmetic unit (5) determines one or a plurality of proper subsets on the basis of imaging conditions and reconstruction conditions (step 2). Next, the arithmetic unit (5) calculates a penalty term weight for each proper subset on the basis of a detector output weight corresponding to a set element contained in the proper subset (step 3). Then, the arithmetic unit (5) performs a successive approximation by using the penalty term weight for each proper subset (step 4).
Inventors:
TAKAHASHI HISASHI (JP)
HIROKAWA KOICHI (JP)
GOTO TAIGA (JP)
SUGAYA YOSHIAKI (JP)
HIROKAWA KOICHI (JP)
GOTO TAIGA (JP)
SUGAYA YOSHIAKI (JP)
Application Number:
PCT/JP2012/059136
Publication Date:
November 01, 2012
Filing Date:
April 04, 2012
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
TAKAHASHI HISASHI (JP)
HIROKAWA KOICHI (JP)
GOTO TAIGA (JP)
SUGAYA YOSHIAKI (JP)
TAKAHASHI HISASHI (JP)
HIROKAWA KOICHI (JP)
GOTO TAIGA (JP)
SUGAYA YOSHIAKI (JP)
International Classes:
A61B6/03
Domestic Patent References:
| WO2010062956A1 | 2010-06-03 |
Foreign References:
| JP2009540966A | 2009-11-26 | |||
| JPS6017568A | 1985-01-29 | |||
| JP2010136958A | 2010-06-24 |
Other References:
TAIGA GOTO ET AL.: "Chikuji Kinji Saikosei Algorithm no Kaihatsu", JAPANESE SOCIETY OF RADIOLOGICAL TECHNOLOGY SOKAI GAKUJUTSU TAIKAI YOKOSHU, vol. 67, 25 February 2011 (2011-02-25), pages 184
J.WANG ET AL.: "Multiscale Penalized Weighted Least-Squares Sinogram Restoration for Low-Dose X-Ray Computed Tomography", CONF.PROC.IEEE ENG.MED.BIOL.SOC., vol. 55, no. 3, March 2008 (2008-03-01), pages 1022 - 1031
H.R.SHI ET AL.: "Quadratic Regularization Design for 2-D CT", IEEE TRANS.MED.IMG., vol. 28, no. 5, May 2009 (2009-05-01), pages 645 - 656
Z.TIAN ET AL.: "Low-dose CT reconstruction via edge-preserving total variation regularization.", PHYS.MED.BIOL., vol. 56, no. 18, September 2011 (2011-09-01), pages 5949 - 5967
J.WANG ET AL.: "Multiscale Penalized Weighted Least-Squares Sinogram Restoration for Low-Dose X-Ray Computed Tomography", CONF.PROC.IEEE ENG.MED.BIOL.SOC., vol. 55, no. 3, March 2008 (2008-03-01), pages 1022 - 1031
H.R.SHI ET AL.: "Quadratic Regularization Design for 2-D CT", IEEE TRANS.MED.IMG., vol. 28, no. 5, May 2009 (2009-05-01), pages 645 - 656
Z.TIAN ET AL.: "Low-dose CT reconstruction via edge-preserving total variation regularization.", PHYS.MED.BIOL., vol. 56, no. 18, September 2011 (2011-09-01), pages 5949 - 5967
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Claims: