Instantaneous waveform-free ratio generation method and device thereof, equipment and medium

Abstract

The invention provides an instantaneous waveform-free ratio generation method and a device thereof, equipment and a medium, and the method comprises the steps: building the corresponding relation between the pressure waveform features of an aorta and the coordinates of a target point through the self-learning capability of an artificial neural network with a feature enhancement layer; obtaining the current pressure waveform features of the current aorta of the patient; and determining a current target point coordinate corresponding to the current pressure waveform feature through the corresponding relation; specifically, the step of determining the current target point coordinates corresponding to the pressure waveform feature comprises the steps that the target point coordinates corresponding to the pressure waveform feature which is same as the current pressure waveform feature in the corresponding relation are determined as the current target point coordinates; and a current instantaneous waveform-free ratio is generated according to the current target point coordinate. The high-level space information is used for positioning a target point, so that the information expression robustness is higher, the feature enhancement layer is added, and unobvious feature points caused by individual differences can be positioned.

Description

technical field [0001] The present application relates to the field of medical detection, especially the method, device, equipment and medium for generating the instantaneous non-waveform ratio. Background technique [0002] Cardiovascular disease is the number one cause of death worldwide, and coronary atherosclerotic aortic disease (coronary heart disease) is one of the most important cardiovascular diseases worldwide. Clinically, there are two intracoronary physiological indicators that can be used to diagnose coronary artery disease, the fractional flow reserve that requires the use of adenosine and the instantaneous non-waveform ratio that does not require the use of adenosine. [0003] The instantaneous wave-free ratio was calculated by measuring the resting pressure gradient across the coronary lesion during the wave-free period. Traditionally, the instantaneous non-waveform ratio was determined by a combination of ECG, pressure distal to the stenosis during the non-...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has certain defects in accurately locating the target point. (1) In the clinical instantaneous non-waveform ratio calculation method: only morphological features are used; there are insignificant points that cannot be accurately positioned to calculate the instantaneous non-waveform ratio

[0005] (2) It is difficult to detect the three target points required to calculate the instantaneous non-waveform ratio: it is difficult to express the features of sparse signals well; existing deep learning methods are difficult to enhance insignificant but important feature points

Images