冠脉造影数字跟踪技术测量冠脉血流速度的临床研究

本研究通过对冠脉生理学分析,结合流体力学原理,利用冠脉造影配套硬件和软件开发,建立血管造影计算机辅助分析系统。应用数字跟踪技术测定冠脉血流速度,并与“金标准”Doppler血流导丝和TIMI氏血流作相关分析和初步临床应用研究80例,结果表明:冠脉造影跟踪法测定LAD的平均流速(17．98±5．66)与Doppler测得的LAD近中断的APV(17．70±5．77)呈正相关(r=0．75,P<0．001),与TIMI氏血流呈负相关(18．58±6．46 cm／s对28±7．5帧,r=-0．51,P<0．05)。研究结果和临床应用表明:该方法所提取的冠脉血流动力学指标具有科学性和实用性,有助于提高常规冠脉造影解剖形态与生理功能相结合的诊断能力,且方法简便易行,节约成本。

A Clinical Study on Coronary Artery Blood Velocity Measured by Digital Tracing Coronary Angiography

Based on the analyses of coronary physiology and the principle of fluid mechanics, a Computer Assistant Analysis (CAA) system was built with coronary angiography hardware as well as development of software. With the CAA system,the coronary blood velocity was measured by "Digital Tracing Technique (DTT)" method, and related analysis was performed with Doppler blood the silk (the standard of gold) or TIMI surname blood in 80 cases clinical cases. The results showed a positive correlation (r1 = 0.79, p1 < 0.001) between Vmean (The average blood velocity of LAD, 17.98 +/- 5.66 cm/s) by measurement using digital tracking technique and Average peak velocity (APV:17.70+/-5.77 cm/s) at approximate and distal of LAD by measurement using Doppler wire; and a negative correlation (r=-0.51, P<0.05) with TIMI surname blood (18.58 +/- 6.46 cms/ s vs 28 +/-7.5 frames). The research and clinical application result enunciates: The coronary blood velocity dynamics measured by DTT method is a scientific index applicable to clinical examination for coronary diseases, which would be useful in enhancing the diagnostic ability integrated in anatomy and physiology during conventional angiography.