Abstract
A new method and system for the visualization of blood flow in coronary grafts is presented. This method is based on the technique of stationary echo cancellation (SEC), phase detection and integration of Doppler signals in real time, using broad-band analog CCD delay lines. Preliminary results of examinations of coronary graft patency for 15 patients are presented.References
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[2] B. BIEBOLD et al., Noninvasive assessment of aortocoronary bypass graft patency using pulse Doppler echocardiography, Am. J. Cardiology, 43, 10-43 (1979).
[3] L. FILIPCZYŃSKI, R. HERCZYŃSKI, A. NOWICKI, T. POWAŁOWSWKI, Blood flows: hemodynamics and ultrasonic Doppler measurement methods (in Polish), PWN, Warsaw–Poznań 1980.
[4] P.J. FISH, Multi-channel, direct resolving Doppler angiography, Proc. 2nd European Congress on Ultrasonics in Medicine, Munich 12-16 May, publ. Excerpta Medica Amsterdam, 1975.
