Title:
IMAGE PROCESSING DEVICE AND REGION EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/132829
Kind Code:
A1
Abstract:
In order to provide an image processing device, region extraction method, and image processing method capable of extracting a target region on the basis of minute variations in a concentration value which exist in localized fashion, and of clearly displaying the extracted target region, an image processing device (100) extracts a blood vessel region (A) from an image and extracts a region in which a CT value is smaller than the average concentration value of the blood vessel region (A) as a soft plaque region (B). For unextracted soft plaque, a pixel pair is set in a difference region between the blood vessel region (A) and the soft plaque region (B), and for each pixel (Pj) of the pixel pair, a determination is made as to whether the pixel value is even smaller than a value slightly smaller than the CT value of the pixel pair. A portion in which there is localized slight variation in pixel values is thereby extracted as soft plaque.
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Inventors:
GOTO YOSHIHIRO (JP)
Application Number:
PCT/JP2014/053678
Publication Date:
September 04, 2014
Filing Date:
February 18, 2014
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
International Classes:
A61B6/03; A61B5/055
Domestic Patent References:
| WO2005117712A1 | 2005-12-15 |
Foreign References:
| JP2012011137A | 2012-01-19 | |||
| JP2012045056A | 2012-03-08 | |||
| JP2002325762A | 2002-11-12 | |||
| JP2008093172A | 2008-04-24 | |||
| JPH04125779A | 1992-04-27 | |||
| JP2009082407A | 2009-04-23 | |||
| JP2011135938A | 2011-07-14 | |||
| JP2010000306A | 2010-01-07 |
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