Patent ID: 11944497
Assignee: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 24:
25. An ultrasound imaging system, comprising:
a probe;
a display device;
a transmitting circuit which excites the probe to alternately transmit focused ultrasound beams and plane ultrasound beams to a scanning target selected by a user;
a receiving circuit and a beam-forming unit which receive echoes of the focused ultrasound beams and plane ultrasound beams to respectively obtain focused ultrasound echo signals and plane ultrasound echo signals; and
a data processing unit which:
obtains ultrasound images of at least a portion of the scanning target according to the focused ultrasound echo signals;
displays the ultrasound images on the display device;
receives a user-specified target point distribution density for target points within the user-selected scanning target;
randomly selects a specific number of target points representing locations of moving particles of a blood flow within the user-selected scanning target according to the user-specified target point distribution density within the user-selected scanning target;
transmits plane ultrasound beams to the user-selected scanning target;
obtains flow velocity vector information for the randomly selected target points in the user-selected scanning target according to the plane ultrasound echo signals;
obtains Doppler flow velocity information according to the plane ultrasound echo signals;
superimposes the ultrasound images and the flow velocity vector information to form vector flow images comprising a flow velocity vector for at least two moving particles selected by at least two of the randomly-selected target points, each of the at least two moving particles being graphically represented by a different fixed shape for uniquely distinguishing the at least two moving particles from each other over a time interval within the blood flow, wherein the flow velocity vector comprises an arrow, a length of the arrow representing a magnitude of the flow velocity vector at the respective moving particle and a direction of the arrow representing the direction of the flow velocity vector at the respective moving particle;
superimposes the ultrasound images and the Doppler flow velocity information to form Doppler color flow images; and
comparatively displays the vector flow images and the Doppler color flow images on the display device.