Title :
Power spectral density function of ultrasound Doppler in the microcirculation
Author :
Raunig, David ; Fox, Martin D.
Author_Institution :
Dept. of Electr. & Syst. Eng., Connecticut Univ., Storrs, CT, USA
Abstract :
For many capillary orientation models, the maximum expected spectral power is at the maximum Doppler shift. Additionally, by gating the signal to measure blood flow only during diastole, many of the pulse and pulse-related movement artifacts are minimized or deleted from the signal. Our results indicate the presence of blood flow related signals that result from the small arteries or capillaries at the finger tip
Keywords :
Doppler measurement; biomedical ultrasonics; blood flow measurement; blood vessels; medical signal processing; spectral analysis; blood flow measurement; capillary orientation models; diastole; finger tip capillaries; maximum Doppler shift; maximum expected spectral power; microcirculation; noise artifacts; peripheral blood flow; power spectral density function; pulse artifacts; pulse-related movement artifacts; signal gating; small arteries; tissue insonification; ultrasound Doppler; Blood flow; Density functional theory; Diseases; Doppler shift; Fingers; Fluid flow measurement; Frequency; Pulse measurements; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Bioengineering Conference, 2000. Proceedings of the IEEE 26th Annual Northeast
Conference_Location :
Storrs, CT
Print_ISBN :
0-7803-6341-8
DOI :
10.1109/NEBC.2000.842396
