Title :
Application of high frequency broadband ultrasound for high resolution blood flow measurement
Author :
Vogt, M. ; Ermert, H.
Author_Institution :
Dept. of Electr. Eng., Ruhr-Univ., Bochum, Germany
Abstract :
Flow estimation approaches using high frequency ultrasound (20-150 MHz) are compared in conjunction with broadband transmit signals. Simulations show that estimation strategies matched to broadband transmit signals, known as wideband techniques, lead to a high resolution and a robust flow estimation. We implemented a high frequency Pulsed Wave Doppler system (center frequency 50 MHz, bandwidth 40 MHz). Using this setup the simulation results are confirmed and a reliable velocity estimation is obtained
Keywords :
Doppler measurement; acoustic signal processing; biomedical ultrasonics; blood flow measurement; haemorheology; medical signal processing; signal resolution; 20 to 150 MHz; 40 MHz; Pulsed Wave Doppler system; broadband transmit signal; broadband transmit signals; estimation strategies; flow estimation; high frequency broadband ultrasound; high resolution; high resolution blood flow measurement; microcirculatory system; reliable velocity estimation; robust flow estimation; simulations; small vessels; wideband techniques; Acoustic scattering; Blood flow; Fluid flow measurement; Frequency estimation; Frequency measurement; Sampling methods; Signal resolution; Ultrasonic imaging; Ultrasonic variables measurement; Wideband;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.661803
