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Title:
METHOD, APPARATUS AND SYSTEM FOR ACQUIRING VASCULAR ASSESSMENT PARAMETER ON BASIS OF ANGIOGRAPHIC IMAGE
Document Type and Number:
WIPO Patent Application WO/2020/098704
Kind Code:
A1
Abstract:
A method, apparatus and system for acquiring a vascular assessment parameter on the basis of an angiographic image. The method for acquiring a vascular assessment parameter on the basis of an angiographic image comprises: acquiring a real-time pressure Pa at an entrance of a coronary artery in an imaging state to obtain a pressure waveform in the time domain Pa-t (S100); building a three-dimensional model for a vessel segment of interest in a two-dimensional angiographic image of the coronary artery in the imaging state to obtain a three-dimensional vascular mesh model (S200); acquiring a real-time blood flow velocity v of the three-dimensional vascular mesh model to obtain a velocity waveform in the time domain v-t (S300); acquiring a pressure-drop waveform in the time domain ΔP-t from the entrance of the coronary artery to a distal end of the coronary stenosis by means of Fourier transform and Fourier inversion; acquiring a vascular assessment parameter of the coronary artery in the imaging state. The method and apparatus enable measurement of a vascular assessment parameter of a coronary artery during diastole, and improve the accuracy thereof by means of filtering interference data by using Fourier transform.

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Inventors:
HUO YUNFEI (CN)
LIU GUANGZHI (CN)
WU XINGYUN (CN)
Application Number:
PCT/CN2019/118053
Publication Date:
May 22, 2020
Filing Date:
November 13, 2019
Export Citation:
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Assignee:
SUZHOU RAINMED MEDICAL TECH CO LTD (CN)
International Classes:
A61B5/026
Foreign References:
CN107184186A2017-09-22
CN102525443A2012-07-04
CN106714673A2017-05-24
CN107615335A2018-01-19
CN108186038A2018-06-22
US20160166158A12016-06-16
JP2018140045A2018-09-13
Other References:
See also references of EP 3881758A4
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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