METHOD AND APPARATUS FOR ESTIMATION AND DISPLAY OF SPECTRAL BROADENING ERROR MARGIN FOR DOPPLER TIME- VELOCITY WAVEFORMS

摘要

A method for displaying a spectral broadening error margin of a Doppler velocity-time waveform envelope, comprising the steps of: transmitting pulses 2241 כ" ה באלול התשס" א - September 13, 2001 of ultrasound into a sample volume of ultrasound scatterers; acquiring a multiplicity of successive samples of Doppler singals backscattered from said sample volume of ultrasound scatterers; processing said Doppler signals to produce spectral line data representing velocity for continuous display of a succession of spectral lines during the continuation of Doppler signal acquisition, the data for each spectral line comprising a multiplicity of frequency bins for different frequency intervals, each bin containing spectral power data for a respective frequency interval, the spectral power data in each bin for each spectral line being displayed as a scale in a respective pixel of a corresponding column of pixels on the display monitor; for each spectral line, determining a spectral broadening error margin comprising errors due to bandwidth, diffraction and analysis time broadening;and displaying a graphical representation of the magnitude of the determined sepctral broadening error for each spectral line on said display monitor.