METHOD AND APPARATUS FOR MEASURING BLOOD FLOW VELOCITY IN DIASTOLIC PHASE, SYSTEM AND STORAGE MEDIUM

WIPO Patent Application WO/2021/087961

A1

Provided are a method and apparatus for measuring a blood flow velocity in a diastolic phase, a system and a storage medium. The method for measuring a blood flow velocity in a diastolic phase comprises: reading a two-dimensional coronary angiography image group of at least one body position (S100); extracting a blood vessel section of interest from the two-dimensional coronary angiography image group (S200); extracting a center line of the blood vessel section (S300); obtaining the difference between the time in which a contrast medium flows through the blood vessel section in any two frames of two-dimensional coronary angiography images, wherein a difference value is Δt, and obtaining the difference between segmented center lines, wherein a difference value is ΔL (S400); according to the ratio of ΔL to Δt, solving a blood flow velocity (S500); and selecting the maximum value of the blood flow velocity, i.e. the blood flow velocity in a diastolic phase (S600). According to the method, there is no need to perform measurement using a non-invasive blood pressure instrument, and thus a measured blood flow velocity in a diastolic phase cannot be influenced by external factors, such as mood, such that the accuracy in measuring a blood flow velocity in the diastolic phase is improved.

LIU GUANGZHI (CN)
GONG YANJUN (CN)
LI JIANPING (CN)
YI TIECI (CN)
ZHENG BO (CN)

PCT/CN2019/116637

May 14, 2021

November 08, 2019

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SUZHOU RAINMED MEDICAL TECH CO LTD (CN)

A61B5/0275

CN108550189A	2018-09-18
CN106327487A	2017-01-11
CN110226923A	2019-09-13
CN110384493A	2019-10-29
US20140276011A1	2014-09-18

LINDA LIU & PARTNERS (CN)

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