Title :
Temporal correlation of blood scattering signals from intravascular ultrasound
Author :
Li, W. ; van der Steen, A.F.W. ; Lancée, C.T. ; Honkoop, J. ; Gussenhoven, E.J. ; Bom, N.
Author_Institution :
Thoraxcentre, Erasmus Univ., Rotterdam, Netherlands
Abstract :
The time-varying characteristics of blood scattering on high frequency intravascular ultrasound were investigated in vivo in 5 pig experiments. The RF correlation time Tc was measured on an M-mode sequence acquired at a high pulse repetition rate. Results showed that Tc measured in blood was approximately 1 ms which was significantly shorter than that measured in wall (Tc≫6 ms). Using the correlation output as a weighting function, most of the blood scattering echoes can be removed for contrast enhancement of the lumen interface
Keywords :
acoustic correlation; bioacoustics; biomedical ultrasonics; blood flow measurement; image enhancement; image sequences; medical image processing; ultrasonic scattering; 6 ms; M-mode sequence; RF correlation time; blood scattering echoes; blood scattering signals; high frequency intravascular ultrasound; high pulse repetition rate; in vivo; intravascular ultrasound; lumen interface; pig experiments; temporal correlation; time-varying characteristics; wall; weighting function; Arteries; Blood; Catheters; Data acquisition; In vivo; Radio frequency; Scattering; Signal processing; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495842
