Method, device and system for measuring mechanical properties of blood vessel, and storage medium

Abstract

The invention discloses a method, device and system for measuring mechanical properties of a blood vessel, and a storage medium. The method for measuring the mechanical properties of the blood vesselis characterized by comprising the following steps: transmitting ultrasonic pulse signals to the blood vessel, and acquiring ultrasonic echo signals reflected by the blood vessel; according to the ultrasonic echo signals, confirming blood vessel strain and the wave group velocity of the strain; and according to the blood vessel strain and the wave group velocity of the strain, confirming a nonlinear shearing modus and an initial shearing modus of the blood vessel. According to the technical scheme of the invention, the blood vessel strain and the wave group velocity of the strain are confirmedaccording to the ultrasonic echo signals, and the nonlinear shearing modus and the initial shearing modus of the blood vessel are further confirmed according to the blood vessel strain and the wave group velocity of the strain. The problem that mechanical properties of a local blood vessel are hard to measure is solved, the purpose that the mechanical properties of the local blood vessel are accurately measured is achieved, local functional change of the blood vessel can be precisely reflected, local lesion of the blood vessel can be found in advance, and precise diagnosis and treatment on the local lesion of the blood vessel can be assisted.

Description

technical field [0001] Embodiments of the present invention relate to a technique for measuring mechanical properties of blood vessels, and in particular, to a method, device, system, and storage medium for measuring mechanical properties of blood vessels. Background technique [0002] The death toll of cardiovascular disease in China accounts for more than 40% of the death toll of diseases among residents, ranking first, higher than cancer and other diseases. Its prevalence is still on the rise. Cardiovascular disease seriously endangers human health, and arterial disease is its pathophysiological basis. Arterial lesions include structural and functional changes. Before the changes in arterial structure, its function has been abnormal in varying degrees. The change of arterial function has become an important screening target for early vascular lesions, and its relationship with cardiovascular diseases has attracted much attention. The mechanical properties of arterial ...

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Problems solved by technology

Among them, the most commonly used technique is to estimate the stiffness of arterial vessels by measuring pulse wave velocity (PWV), but the technique of estimating arterial stiffness by measuring pulse wave velocity can only effectively study the generalization of long arterial segments. Mechanical properties, not applicable to small segments or parts of arterial tree vessels

The second technique is to estimate arterial stiffness by ultrasound echo-tracking technique based on estimated changes in arterial lumen pressure (P) and arterial cross-sectional area (A) over a complete cardiac cycle, although this method can measure regional arterial stiffness However, in the estimation process, it is assumed that the viscoelastic properties of the arterial wall are constant under the cardiac cycle. In fact, the arterial wall elasticity changes nonlinearly with the arterial blood pressure. Therefore, this method The measured data has certain limitations and cannot accurately express the mechanical properties of blood vessels

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