Title:
BLOOD FLOW ANALYZING DEVICE AND METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/159708
Kind Code:
A1
Abstract:
Provided are a blood flow analyzing device and method, and a program, with which it is possible to recognize a backflow location even if the backflow occurs in an unexpected location, and with which it is possible to reduce the risk of overlooking a backflow location. This blood flow analyzing device is provided with: a blood vessel region extracting unit (11) which extracts a blood vessel region from a blood vessel image obtained by capturing an image of a subject containing a blood vessel; a flow velocity vector acquiring unit (12) which acquires a flow velocity vector indicating a blood flow speed and a blood flow direction in the blood vessel region; and a backflow identifying unit (13) which sets a central axis extending in a direction in which the blood vessel region extends, calculates an integral value by integrating in the time axis direction the component of the flow velocity vector in the direction of the central axis, and identifies the presence or absence of backflow of the blood flow in the blood vessel region on the basis of a change in the integral value.
Inventors:
ITO HIROTAKA (JP)
Application Number:
PCT/JP2018/007610
Publication Date:
September 07, 2018
Filing Date:
February 28, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B8/06; A61B5/055
Foreign References:
| JP2004201730A | 2004-07-22 | |||
| JP2005533593A | 2005-11-10 | |||
| JP2010075636A | 2010-04-08 |
Other References:
"proximal isovelocity surface area", vol. 63, no. 20, 15 October 1993 (1993-10-15), pages 203 - 204
WANG, WUGANG ET AL.: "Quantification of Mitral Refurgitation by General Imaging Three-Dimensional Quantification:Feasibility and Accuracy", JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, vol. 27, no. 3, March 2014 (2014-03-01), pages 268 - 276, XP028619436
WANG, WUGANG ET AL.: "Quantification of Mitral Refurgitation by General Imaging Three-Dimensional Quantification:Feasibility and Accuracy", JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, vol. 27, no. 3, March 2014 (2014-03-01), pages 268 - 276, XP028619436
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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