Patent ID: 8206302

Claim:
A method for filling Doppler signal gaps produced by switching between two or more imaging modes in ultrasound diagnostic imaging, wherein a Doppler signal is not acquired during a gap, comprising the steps of: storing a Doppler signals before and after the gap; reading the Doppler signals before and after the gap as Doppler signals to be filled and analyzing spectral characteristics of the Doppler signals to be filled to obtain spectral parameters; judging whether the Doppler signals to be filled are to be frequency compensated according to the spectral parameters; frequency compensating the Doppler signals to be filled according to the spectral parameters, wherein the frequency compensated Doppler signals are frequency modulated to shift mean frequencies of the Doppler signals to be filled; filling the gap by weighting and superposing the frequency compensated Doppler signals to be filled and the original Doppler signals before and after the gap if the Doppler signals to be filled meet a frequency compensation condition, or filling the gap by weighting and superposing the Doppler signals to be filled and the original Doppler signals before and after the gap directly if the Doppler signals to be filled do not meet the frequency compensation condition; and displaying the resulting image of the resulting signals via a digital scan converter.