A nonstationary signal simulation model for continuous wave and pulsed Doppler ultrasound

A computer simulation model of the nonstationary Doppler ultrasound signals arising from pulsatile blood flow is presented. The model uses sinusoidal components that are modulated by a power spectral density function that varies over the cardiac cycle. An empirical model consisting of two exponentia...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 1989-09, Vol.36 (5), p.522-530
Main Authors: Mo, L.Y.L., Cobbold, R.S.C.
Format: Article
Language:English
Subjects:
Band pass filters
Biological and medical sciences
Blood flow
Computational modeling
Computer simulation
Frequency estimation
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Miscellaneous. Technology
Nonlinear filters
Signal generators
Signal processing
Signal synthesis
Ultrasonic imaging
Ultrasonic investigative techniques
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Summary:A computer simulation model of the nonstationary Doppler ultrasound signals arising from pulsatile blood flow is presented. The model uses sinusoidal components that are modulated by a power spectral density function that varies over the cardiac cycle. An empirical model consisting of two exponential functions is used to represent both the continuous wave and pulsed Doppler power spectral density for normal carotid arteries. It is shown that the spectrogram speckle patterns of the synthesized Doppler signals compare very well with those clinically recorded.< >
ISSN:0885-3010
1525-8955
DOI:10.1109/58.31796