Coronary artery stenosis visualization quantification method and device based on multi-channel heart sound

Abstract

The invention discloses a coronary artery stenosis visualization quantification method and device based on multi-channel heart sound, and is suitable for the field of analysis of cardiophonogram electrocardiograms. The method comprises the steps of synchronously collecting and recording electrocardiosignals and multi-channel heart sound signals, and storing the electrocardiosignals and the multi-channel heart sound signals as audio files; segmenting heartbeat cycle signal data into S1, a systolic period, S2 and a diastolic period by using R waves and heart sound characteristics; respectively calculating characteristic values of each section of the heartbeat cycle and the total heartbeat cycle; performing stenosis degree risk prediction by adopting multi-model prediction and decision rules;and representing the coronary artery stenosis risk degree by adopting columnar graphs with different colors and heights. According to the method, various characteristics are extracted, heartbeat cycle characteristics are reflected in all directions, and the model prediction accuracy is improved through the multi-machine learning model and the use of decision rules. The health condition of the coronary artery is visually reflected in the forms of the energy spectrogram and the histogram.

Description

technical field [0001] The invention relates to the analysis field of phonocardiogram and electrocardiogram, in particular to a method and equipment for visualizing and quantifying coronary artery stenosis based on multiple heart sounds. Background technique [0002] The frequency of heart sounds produced by the normal heart during systolic and systolic activities ranges from 1 to 800 Hz. Human hearing is more sensitive to the 40-400Hz frequency band, and vibrations below 20Hz are inaudible to the human ear. [0003] Each cardiac cycle can produce four heart sounds, generally the first and second heart sounds can be heard. [0004] 1. The first heart sound occurs during systole, marking the beginning of ventricular systole. The pitch is low (40-60 Hz), the duration is long (0.1-0.12 seconds), and it is loud. [0005] 2. The second heart sound occurs during diastole, marking the beginning of ventricular diastole, which is divided into two components: aortic sound and pulmo...

AI Technical Summary

Problems solved by technology

[0006] 3. The third heart sound occurs after the second heart sound, lasts for a short time (0.04-0.05 seconds), and has a low pitch

Images