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Title:
MEDICAL IMAGE PROCESSING DEVICE, X-RAY COMPUTER TOMOGRAPHY DEVICE, AND MEDICAL IMAGE PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/049940
Kind Code:
A1
Abstract:
An objective is to employ medical images corresponding respectively to two different types of x-ray energy to generate a medical image that corresponds to an x-ray energy that an operator desires in a short amount of time and with high contrast and low noise. A medical image processing device according to the present embodiment comprises: an image storage unit which stores first and second medical images derived respectively from x-rays of first and second energies; an estimation unit which estimates a proportion for either of a first substance or a second substance of the other substance thereof being present for each pixel, on the basis of an attenuation constant of the first substance corresponding to the first and second energies, an attenuation constant of the second substance corresponding to the first and second energies, and pixel values in the first and second medical images; a composite ratio determination unit which determines a composite ratio of pixel values between the first and second medical images for each pixel on the basis of the probability of the presence of the first and second substances and each attenuation coefficient of the first and second substances relating to a target energy; and a composite image generation unit which generates a composite image from the first and second medical images relating to the target energy, using the determined composite ratio.

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Inventors:
AKINO NARUOMI (JP)
Application Number:
PCT/JP2011/071014
Publication Date:
April 19, 2012
Filing Date:
September 14, 2011
Export Citation:
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Assignee:
TOSHIBA KK (JP)
TOSHIBA MEDICAL SYS CORP (JP)
AKINO NARUOMI (JP)
International Classes:
A61B6/00; A61B6/03
Foreign References:
JP2009153829A2009-07-16
JP2006320464A2006-11-30
JP2005245657A2005-09-15
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
Masatoshi Kurata (JP)
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