A method includes receiving ultrasound echo signals produced in response to a pulsed ultrasound field interacting with anatomical tissue and flow of structure therein. The method further includes generating electrical signals indicative thereof. The method further includes beamforming the electrical signals producing beamformed data. The method further includes constructing a real-time image of the anatomical tissue with the beamformed data. The method further includes constructing a de-aliased color images of the flow with the beamformed data. The method further includes visually presenting the real-time image of the anatomical tissue with the de-aliased color images of the flow superimposed thereover.

A method includes receiving ultrasound echo signals produced in response to a pulsed ultrasound field interacting with anatomical tissue and flow of structure therein. The method further includes generating electrical signals indicative thereof. The method further includes beamforming the electrical signals producing beamformed data. The method further includes constructing a real-time image of the anatomical tissue with the beamformed data. The method further includes constructing a de-aliased color images of the flow with the beamformed data. The method further includes visually presenting the real-time image of the anatomical tissue with the de-aliased color images of the flow superimposed thereover.

In one embodiment, a method is provided. The method includes transmitting a first set of ultrasound waves to determine whether there is fluid flow at a target area. The first set of ultrasound waves are transmitted at a first pulse repetition frequency. The method also includes determining whether there is fluid flow in a second area based on the first set of ultrasound waves. The second area is between the target area and an ultrasound probe. The method further includes transmitting a second set of ultrasound waves to detect fluid flow at the target area in response to determining that there is fluid flow in the second area between the target area and the ultrasound probe. The second set of ultrasound waves are directed towards the target area. The second set of ultrasound waves are transmitted at a second pulse repetition frequency.

A method in accordance with the present disclosure may include transmitting a plurality of ultrasound pulses toward a medium from a transducer array, wherein the plurality of ultrasound pulses includes a sequence of a Doppler burst (10-1, 10-2) comprising a plurality of unfocused first pulses (12) and a B-mode burst comprising one or more second pulses (13). The method may further include detecting echoes responsive to the transmitted sequence, wherein the detecting includes simultaneously detecting, within a field of view, FOV, of the array, a set (14-1, 14-2) of first echoes responsive to the plurality of unfocused first pulses (12), generating Doppler data from signals representative of the set (14-1, 14-2) of first echoes, generating B-mode image data from signals representative of echoes responsive to the one or more second pulses (13), and simultaneously displaying the Doppler data and B-mode image data.

If the boundary value of a velocity scale set in a case where the information indicating the velocity of the moving body is displayed on a liquid crystal panel is less than a threshold value, the frequency of pulses used in pulse-width control is set to 20 kHz in such a manner that noise ascribable to the pulses for pulse-width control will not be displayed on the liquid crystal panel. If the boundary value of the velocity scale is equal to or greater than the threshold value, then the frequency of pulses used in pulse-width control is set to 200 Hz in such a manner that noise ascribable to the pulses for pulse-width control will reside at a position remote from the information indicative of velocity.

According to one embodiment, there is provided an ultrasonic diagnostic apparatus which comprises data processing circuitry, a display, input interface circuitry and system control circuitry. The data processing circuitry generates at least B-mode data and Doppler spectral data. The display displays images based on the B-mode data and the Doppler spectral data that have been generated by the data processing circuitry. The input interface circuitry inputs one of an instruction to transit to a mode of the Doppler spectral data and an operation to a range gate. The system control circuitry changes a display form of the Doppler spectral data displayed on the display based on the Doppler spectral data generated in a predetermined time after the input in response to the input to the input interface circuitry.

During transmission, a speed of sound pulses gradually reduces due to acoustic impedance. Regulating a length or a density or a sound speed of the sound pulses affects their average speed in the transmitting medium, sound intensity and detecting depth. Time of flight (TOF) and TOF shift can be used to calculate the depth and moving speed of detecting objects. Calculating a speed of moving objects by simultaneously detecting TOF shift at same site from two separated piezoelectric (PZT) elements improves the testing results with accuracy, simplification and reproducibility. Coding sound pulses to obtained the TOF and the TOF shift will simultaneously calculate the depth and the moving speed of sampling points, which can be used to construct 2D and 3D images for these motionless and/or moving sampling points. Coded sound pulses also improves the quality of the imaging.

An ultrasound imaging system includes receive circuitry (110) configured to receive electrical signals from ultrasound transducer elements wherein the electrical signals are indicative of sensed ultrasound echo signals. The system further includes an image process (114) configured to process the electrical signals and generate a 2-D image. The system further includes a vessel wall identifier (116) configured to identify at least a proximal wall and a distal wall of a vessel in the B-mode image from the B-image employing a signal mirroring technique. The system further includes a rendering engine (124) configured to display the 2-D image on a display (126) with graphical indicia corresponding to the identified proximal wall and distal wall superimposed over the vessel in the 2-D image.

An ultrasound imaging system includes receive circuitry (110) configured to receive electrical signals from ultrasound transducer elements wherein the electrical signals are indicative of sensed ultrasound echo signals. The system further includes an image process (114) configured to process the electrical signals and generate a 2-D image. The system further includes a vessel wall identifier (116) configured to identify at least a proximal wall and a distal wall of a vessel in the B-mode image from the B-image employing a signal mirroring technique. The system further includes a rendering engine (124) configured to display the 2-D image on a display (126) with graphical indicia corresponding to the identified proximal wall and distal wall superimposed over the vessel in the 2-D image.

An ultrasound observation device includes: a processor configured to perform comparison operation on first scan data and second scan data during sequential alternating scan for generating Doppler information based on multiple sets of scan data acquired by sequentially transmitting ultrasound waves in multiple depth directions and by repeatedly transmitting the ultrasound waves in this sequential order, the first scan data being acquired by transmitting the ultrasound waves in a depth direction for first scan during the sequential alternating scan, the second scan data being acquired by transmitting the ultrasound waves for a second time during the sequential alternating scan and being acquired by transmitting the ultrasound waves in a depth direction identical to the depth direction for the first scan; and a sequential-alternating scan controller configured to control transmission timing for repeatedly transmitting the ultrasound waves during the sequential alternating scan based on a calculation result of the processor.