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Spectral broadening in pulsed wave Doppler caused by the transit time effect deteriorates the frequency resolution and may cause overestimation when tracing the maximum velocities in high velocity blood flow regions. Data adaptive spectral estimators have been shown to provide improved frequency resolution, especially for small window sizes, but offer little or no improvement when the transit time...
The trade-off between temporal and spectral resolution in conventional pulsed wave (PW) Doppler may limit duplex/triplex quality and the depiction of rapid flow events. It is therefore desirable to reduce the required observation window (OW) of the Doppler signal while preserving the frequency resolution. This work investigates how the required observation time can be reduced by adaptive spectral...
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