W. Li, A. V. D. van der Steen, C. Lancée, J. Honkoop, E. Gussenhoven, N. Bom
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Temporal correlation of blood scattering signals from intravascular ultrasound
The time-varying characteristics of blood scattering on high frequency intravascular ultrasound were investigated in vivo in 5 pig experiments. The RF correlation time T/sub c/ was measured on an M-mode sequence acquired at a high pulse repetition rate. Results showed that T/sub c/ measured in blood was approximately 1 ms which was significantly shorter than that measured in wall (T/sub c//spl Gt/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.
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