Multiple beam spectral doppler in medical diagnostic ultrasound imaging

In a non-transitory computer readable storage medium having stored therein data representing instructions executable by a programmed processor for acquiring spatially distinct Spectral Doppler information, the storage medium comprising instructions for:

• transmitting a sequence of first beams to a first region spaced apart from a second region, the sequence of the first beams being transmitted during a first period of time;
• transmitting a sequence of second beams to the second region during a second period of time different from the first period;
• repeating the transmitting of the sequences of the first and second beams;
• controlling the repeating so that the transmissions to the first region are at different times than the transmissions to the second region based on a difference in anatomic operation at the first and second regions, the anatomic operation derived from ultrasound data or a sensor;
• receiving signals for a plurality of laterally spaced locations in response to each of the first and second beams, sets of signals being received for each of the laterally spaced locations due to the repetition of the transmitting;
• performing spectral analysis of the signals of each set separately for each of the laterally spaced locations;
• wherein the repeating of the transmissions of the first and second beams to the first and second regions is performed such that the receiving and performing occurs in a time-continuous manner;
• and
• automatically adjusting the repetitions of the transmitting and repetition of the receiving to account for change in location of the first region over time, the adjusting being as a function of ultrasound data from a previous performance of the spectral analysis.