Title :
Spectral estimators for Doppler analysis of intracoronary ultrasound catheters
Author :
Roth, Th ; Brennecke, R. ; Conradi, G. ; Erbel, R. ; Meyer, J.
Author_Institution :
Med. Clinic, Johannes Gutenberg Univ., Mainz, Germany
Abstract :
With the zero-cross-detection method (ZCD) it has been shown that it is not possible to achieve a reproducible quantitative, and robust evaluation of an inter-coronary audio signal. The authors define spectral estimators to analyze the Doppler-audio signal. Measurements in a blood flow model have shown that the ZCD method underestimates the expected velocity at all speeds. Spectral analysis allows the determination of the actual and peak velocity more robustly and precisely
Keywords :
Doppler effect; biomedical ultrasonics; cardiology; haemodynamics; spectral analysis; Doppler analysis; blood flow model; haemodynamic measurements; inter-coronary audio signal; intracoronary ultrasound catheters; medical US; peak velocity; spectral analysis; spectral estimators; zero-cross-detection method; Blood flow; Catheters; Fluid flow measurement; Frequency; Pulse measurements; Robustness; Signal analysis; Spectral analysis; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Computers in Cardiology 1991, Proceedings.
Conference_Location :
Venice
Print_ISBN :
0-8186-2485-X
DOI :
10.1109/CIC.1991.169010
