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METHOD, APPARATUS AND SYSTEM FOR ACQUIRING VASCULAR ASSESSMENT PARAMETER ON BASIS OF ANGIOGRAPHIC IMAGE
METHOD, APPARATUS AND SYSTEM FOR ACQUIRING VASCULAR ASSESSMENT PARAMETER ON BASIS OF ANGIOGRAPHIC IMAGE
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机译:基于血管造影图像获取血管评估参数的方法,装置和系统
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摘要
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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