The existing methods for ultrasonic blood flow measurement were studied. The pulsed Doppler system and the autocorrelation method are essentially the same narrowband estimation methods with low velocity resolution and probably the aliased spectrum. Three wideband techniques are the time domain crosscorrelation technique, the wideband maximum likelihood estimation method and two-dimensional Fourier transform method, and these techniques can achieve high velocity resolution and low probability of aliasing.
|Original language||English (US)|
|Number of pages||13|
|Journal||Shengxue Xuebao/Acta Acustica|
|State||Published - May 1997|
ASJC Scopus subject areas
- Acoustics and Ultrasonics