Ultrasound imaging system for relatively low-velocity blood flow

Details Ultrasound imaging system for relatively low-velocity blood flow Ultrasound imaging system for relatively low-velocity blood flow

1987-10-28

1989-12-19

Smith, Jerry

Boots, shoes, and leggings

7386125, 12866001, 12866007, G06F 1100, G06F 1542

Patent

active

048886947

ABSTRACT:
An ultrasound blood flow imaging system employing a moving-target-type Doppler processor having a passband extending from zero hertz to the repetition frequency of the pulses generated and processed during each beam. The system is able to image low-velocity blood flow by reducing the frequency at which pulses are generated and processed during each beam, thereby increasing the gain of the flow processor at low frequencies. In order to avoid a corresponding decrease in the frame rate, the ultrasound pulses for several beams are alternately generated and processed in interleaved sequence rather than generating and processing all of the ultrasound pulses for each beam before generating and processing ultrasound pulses for the next beam.

REFERENCES:
patent: 4276885 (1981-07-01), Ticker et al.
patent: 4328707 (1982-05-01), Clement et al.
patent: 4612937 (1986-09-01), Miller
patent: 4751929 (1988-06-01), Hyakawa et al.

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