中国医疗设备2016，Vol.31Issue(6)：36-41,6.DOI:10.3969/j.issn.1674-1633.2016.06.007
超声粒子图像测速技术评估左心室涡旋特性的初步研究
Preliminary Study of Application of the Ultrasonic Particle Image Velocimetry Technique in Evaluation of Left Ventricular Vortex Characteristics
摘要
Abstract
The vortex properties of left ventricles can be considered as a potential indicator for heart’s health status. Using the ultrasonic particle image velocimetry (PIV) technique to calculate the characteristics of vortex in the heart is a relatively new research direction, and the key is to prove its adequate reliability and accuracy for clinical applications. For this purpose, a ultrasonic particle image velocimetry system was constructed to build a human blood circulation simulation system. And the polyvinyl alcohol (PVA) was used to make the left ventricular phantoms, so that the ultrasonic PIV technique could be tested in controlled conditions for the calculation of the vortex characteristics in the heart. The system achieved continuous imaging of the body, by adjusting the scanning line density, image width, image depth and other parameters, with the fastest speed of thousands of frames per second. Cardiac blood flow velocity profiles were obtained through the algorithm of acoustic PIV and further calculation of relevant parameters for the vortex in the heart, including energy loss (DI) and energy fluctuations (EF), vortex relative strength (RS) and eddy fluctuations (W). The results show that the constructed system, the simulated body and the related algorithms are feasible, which is the basis for the next step of work.关键词
超声/粒子图像测速/左心室/涡旋Key words
ultrasound/particle image velocimetry/left ventricles/vortex分类
医药卫生引用本文复制引用
张耀楠,周伟,牛丽丽..超声粒子图像测速技术评估左心室涡旋特性的初步研究[J].中国医疗设备,2016,31(6):36-41,6.基金项目
辽宁省自然科学基金资助项目（201202071），西安思源学院校级重大科研项目（XASY-B1601）。 （）
