Title:
DIAGNOSTIC IMAGING DEVICE AND IMAGE ACQUISITION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/203875
Kind Code:
A1
Abstract:
Provided is a diagnostic imaging device such as an MRI device, wherein image quality is improved by correction processing, and imaging time has been reduced. In this diagnostic imaging device, a noise reduction unit 201 reduces noise in observation data which has been acquired by an observation unit 100 and converted into an image, and an image correction unit 202 corrects the noise-reduced data by correction processing using the visual characteristics of humans. The image correction unit 202 separates the noise reduced data into a global luminance component and a local fluctuating component, uses the global luminance component to generate a correction level map, and corrects the noise-reduced data using the correction degree map and the local fluctuation component in order to obtain a high quality image which is clinically viable.
Inventors:
NOGUCHI YOSHIMI (JP)
OGINO MASAHIRO (JP)
MURASE TAKENORI (JP)
TAKAHASHI TETSUHIKO (JP)
OGINO MASAHIRO (JP)
MURASE TAKENORI (JP)
TAKAHASHI TETSUHIKO (JP)
Application Number:
PCT/JP2017/014966
Publication Date:
November 30, 2017
Filing Date:
April 12, 2017
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
A61B5/055; A61B6/03; A61B8/14; G06T1/00
Foreign References:
| JP2013183834A | 2013-09-19 | |||
| JP2005004506A | 2005-01-06 |
Other References:
HONGQING HU , GUOQIANG NI: "Magetic Resonance Image Enhancement based on Multiscale Retinex Algorithm", 2010 3RD INTERNATIONAL CONFERENCE ON BIOMEDICAL ENGINEERING AND INFORMATICS, vol. 1, 2010, pages 345 - 348, XP031804033
KATSUMI TSUJIOKA: "60. Chikuji Kinji Gazo Filter to shite no TV-ho", INNERVISION, vol. 28, no. 5, 2013, pages 122 - 123
ZOHAIR AL-AMEEN ET AL.: "A New Algorithm for Improving the Low Contrast of Computed Tomography Images Using Tuned Brightness Controlled Single-Scale Retinex", SCANNING, vol. 37, no. 2, 6 February 2015 (2015-02-06), pages 116 - 125, XP055600677
NARUOMI YASUDA ET AL.: "Understanding of retinex theory and its application to medical x-ray images", GIFU UNIVERSITY OF MEDICAL SCIENCE KIYO, no. 9, 2015, pages 59 - 65
KATSUMI TSUJIOKA: "60. Chikuji Kinji Gazo Filter to shite no TV-ho", INNERVISION, vol. 28, no. 5, 2013, pages 122 - 123
ZOHAIR AL-AMEEN ET AL.: "A New Algorithm for Improving the Low Contrast of Computed Tomography Images Using Tuned Brightness Controlled Single-Scale Retinex", SCANNING, vol. 37, no. 2, 6 February 2015 (2015-02-06), pages 116 - 125, XP055600677
NARUOMI YASUDA ET AL.: "Understanding of retinex theory and its application to medical x-ray images", GIFU UNIVERSITY OF MEDICAL SCIENCE KIYO, no. 9, 2015, pages 59 - 65
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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