Method for calculating fractional flow reserve based on pressure sensor and angiographic image

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United States of America Patent

PATENT NO 11779233
SERIAL NO

17132689

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Abstract

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Disclosed is a method for calculating fractional flow reserve, comprising: collecting a pressure at the coronary artery inlet of heart by a blood pressure sensor in real-time, and storing a pressure value in a data linked table; obtaining an angiographic time according to the angiographic image, finding out the corresponding data from data queues based on time index using the angiographic time as an index value, screening out stable pressure waveforms during multiple cycles, and obtaining an average pressure Pa; and obtaining a length of the segment of blood vessel from angiographic images of the two body positions, and obtaining a blood flow velocity V; calculating a pressure drop ΔP for the segment of the blood vessel using the blood flow velocity V at the coronary artery inlet, and calculating a pressure Pd at the distal end of the blood vessel, and further calculating the angiographic fractional flow reserve.

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Patent Owner(s)

  • SUZHOU RAINMED MEDICAL TECHNOLOGY CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huo, Yunfei Jiangsu, CN 6 5
Liu, Guangzhi Jiangsu, CN 30 66
Wu, Xingyun Jiangsu, CN 5 5

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