System and method for super-resolution imaging and multi-parameter detection of vascular mechanical characteristic

Abstract

The invention belongs to the technical field of an ultrasonic diagnosis device, relating to a vascular mechanics super resolution image and a hemodynamic parameter system and a method thereof. The system comprises a blood vessel and surrounding tissue mechanics property super resolution imaging subsystem, a blood vessel compression back and forth area ratio calculation subsystem, a hemodynamics multiparameter detection subsystem. The method is as follows: (1) a B ultrasonic image of the blood vessel before and after compression is acquired for super resolution reconstruction; based on the reconstruction, displacement estimation, strain estimation and elasticity modulus reconstruction are carried out on the blood vessel; an elastic graph of the blood vessel and the sounding issue is drafted; (2) the situation of change of the cross-sectional area ratio of the blood vessel before and after compression is determined according to the situation of change of the cross-sectional area of the blood vessel before and after compression; (3) the distribution of velocity field in the blood vessel is reconstructed and the shearing rate of the blood vessel is calculated; the state of the blood stream and the vessel wall is analyzed. By imaging on vascular mechanics property and calculating on dynamical parameters, the nature and variation of the blood vessel and the sounding tissue is analyzed, thus increasing the accuracy of detecting blood vessel and thrombus.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic diagnostic equipment, and in particular relates to a system and method integrating super-resolution imaging of biomechanical properties of blood vessels and their surrounding tissues and detection of hemodynamic parameters. Background technique [0002] Hemodynamics, such as the mechanical properties of the arterial wall, blood flow rate, turbulent flow characteristics, and shear rate, are closely related to the physiological and pathological conditions of the vascular system. Under different physiological and pathological conditions (such as atherosclerotic plaque), the mechanical properties of blood vessels and the dynamic parameters of blood will change. The detection and estimation of the mechanical properties of blood vessel walls, especially the elasticity, can be divided into two categories: in vitro and in vivo. The main limitation of ex vivo elasticity estimation is the variability of...

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Problems solved by technology

However, the above methods have three defects: (1) They all estimate the parameters of vascular mechanics at the system and organ level, so that the research and application of vascular mechanics cannot enter the tissue level, so they cannot reflect the local micro-regional mechanics of blood vessels. (2) lack of directness, and the accuracy is difficult to further improve; (3) in vivo indirect detection and estimation methods of vascular mechanical properties are limited under nonlinear elastic conditions

Chinese invention patent "Cerebral Vascular Hemodynamics Detection Device Based on Color Doppler Ultrasound" ZL200620078158.1 (authorized announcement date November 28, 2007, authorized publication number 200980680Y), provides a color Doppler ultrasound-based The cerebrovascular hemodynamic detection device, but its invention is mainly used in the detection of intracranial blood vessels, and there is no relevant detection of vascular mechanical characteristics

Chinese invention patent "Hemodynamic Monitoring" ZL02822277.6 (authorized publication date March 9, 2005, authorized publication number CN1592595), provides a device for measuring pulmonary artery pressure, average pulmonary capillary pressure and cardiac index, However, this invention only detects the dynamic parameters of pulmonary blood flow, and does not analyze the mechanical properties of blood vessels from the perspective of biomechanics

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