Apparatus for ultrasound flow mapping

摘要

Apparatus for mapping moving objects by determining the cross-correlation function between two digitally sampled ultrasound A-line signals comprises a plurality of fractional step delay (FSD) digital interpolation filters which estimate the value of one of said input signals at intervals between said samples and a plurality of one-bit correlation circuits each of which determines the correlation between the first signal and the output of one of said interpolation filters.