Method for generating contrast enhanced ultrasound images with varied imaging parameters and ultrasound imaging device performing the method

1. A contrast enhanced imaging method, comprising:

receiving, via a processor, a first instruction input by a user;

determining a first imaging mode from preset imaging modes in response to the first instruction, wherein the first imaging mode comprises a first frame rate, and the first frame rate is pre-configured with first imaging parameters comprising a first imaging range and a first pulse repetition frequency;

transmitting first ultrasound waves in the first pulse repetition frequency to a target object and receiving first ultrasound echoes returned from the target object according to the first imaging mode to obtain first ultrasound echo signals;

generating a first contrast enhanced image having the first frame rate in the first imaging range according to the first ultrasound echo signals;

receiving, via the processor, a second instruction input by the user;

determining a second imaging mode from the preset imaging modes in response to the second instruction, wherein the second imaging mode comprises a second frame rate greater than the first frame rate, and the second frame rate is pre-configured with second imaging parameters comprising a second imaging range less than the first imaging range and a second pulse repetition frequency greater than the first pulse repetition frequency;

transmitting second ultrasound waves in the second pulse repetition frequency to the target object and receiving second ultrasound echoes returned from the target object according to the second imaging mode to obtain second ultrasound echo signals; and

generating a second contrast enhanced image having the second frame rate in the second imaging range according to the second ultrasound echo signals.

2. The method of claim 1 , wherein the first frame rate is a pre-configured with fixed frame rate, wherein the pre-configured fixed frame rate of the first imaging mode is smaller than the second frame rate of the second imaging mode.

3. The method of claim 2 , wherein

the first imaging parameters further comprise at least one of a first number of times for transmitting ultrasound waves and a first line density; and

the second imaging parameters further comprise at least one of a second number of times for transmitting ultrasound waves and a second line density; and

wherein, the first number of times for transmitting ultrasound waves is greater than the second number of times for transmitting ultrasound waves, or the first line density is greater than the second line density.

4. The method of claim 2 , wherein, the second imaging mode is pre-configured with at least two frame rates and each of the at least two frame rates is pre-configured with a corresponding imaging parameter, and the second frame rate is determined from the at least two frame rates.

5. The method of claim 2 , wherein, the second imaging mode is pre-configured with at least two frame rates and an execution sequence of the at least two frame rates, wherein each frame rate is pre-configured with a corresponding imaging parameter and an imaging duration, and the method further comprises:

receiving a third instruction; and

wherein, transmitting the second ultrasound waves in the second pulse repetition frequency to the target object and receiving the second ultrasound echoes returned from the target object according to the second imaging mode to obtain the second ultrasound echo signals comprises:

sequentially transmitting the second ultrasound waves to the target object and receiving the second ultrasound echoes returned from the target object according to the execution sequence, the pre-configured imaging parameter and the imaging duration of a corresponding frame rate, in response to the third instruction to obtain the second ultrasound echo signals; and

generating the second contrast enhanced image according to the second ultrasound echo signals comprises:

sequentially generating contrast enhanced images according to the obtained second ultrasound echo signals.

6. The method of claim 1 , further comprising:

receiving a fourth instruction; and

stopping transmitting ultrasound waves to the target object and receiving ultrasound echoes returned from the target object in response to the fourth instruction.

7. A contrast enhanced imaging method, comprising:

transmitting, via a probe, first ultrasound waves in a first pulse repetition frequency to a target object and receiving first ultrasound echoes returned from the target object according to a first imaging mode to obtain first ultrasound echo signals, wherein the first imaging mode comprises a first frame rate, and the first frame rate is pre-configured with first imaging parameters comprising a first imaging range and the first pulse repetition frequency;

generating, via a processor, a first contrast enhanced image having the first frame rate in the first imaging range according to the first ultrasound echo signals;

receiving, via the processor, a mode switching instruction to switch to a second imaging mode, wherein the second imaging mode comprises a second frame rate greater than the first frame rate, and the second frame rate is pre-configured with second imaging parameters comprising a second imaging range less than the first imaging range and a second pulse repetition frequency greater than the first pulse repetition frequency;

transmitting, via the probe, second ultrasound waves in the second pulse repetition frequency to the target object and receiving second ultrasound echoes returned from the target object according to the second imaging mode to obtain second ultrasound echo signals; and

generating, via the processor, a second contrast enhanced image having the second frame rate in the second imaging range according to the second ultrasound echo signals.

8. An ultrasound imaging device, comprising:

a probe;

a transmitting circuit which excites the probe to transmit ultrasound waves to a target object;

a receiving circuit which receives ultrasound echoes returned from the target object through the probe to obtain an ultrasound echo signal;

a processor configured to process the ultrasound echo signal to obtain an ultrasound image of the target object;

a display which displays the ultrasound image;

wherein the processor is further configured to:

receive a first instruction input by a user;

determine a first imaging mode from preset imaging modes in response to the first instruction, wherein the first imaging mode comprises a first frame rate, and the first frame rate is pre-configured with first imaging parameters comprising a first imaging range and a first pulse repetition frequency;

transmit first ultrasound waves in the first pulse repetition frequency to the target object and receive first ultrasound echoes returned from the target object according to the first imaging mode to obtain first ultrasound echo signals;

generate a first contrast enhanced image having the first frame rate in the first imaging range according to the first ultrasound echo signals;

receive a second instruction input by the user;

determine a second imaging mode from the preset imaging modes in response to the second instruction, wherein the second imaging mode comprises a second frame rate greater than the first frame rate, and the second frame rate is pre-configured with second imaging parameters comprising a second imaging range less than the first imaging range and a second pulse repetition frequency greater than the first pulse repetition frequency;

transmit second ultrasound waves in the second pulse repetition frequency to the target object and receive second ultrasound echoes returned from the target object according to the second imaging mode to obtain second ultrasound echo signals; and

generate a second contrast enhanced image having the second frame rate in the second imaging range according to the second ultrasound echo signals.

9. The device of claim 8 , wherein the first frame rate is a pre-configured fixed frame rate, wherein the pre-configured fixed frame rate of the first imaging mode is smaller than the second frame rate of the second imaging mode.

10. The device of claim 9 , wherein

the first imaging parameters further comprise at least one of a first number of times for transmitting ultrasound waves and a first line density; and

the second imaging parameters further comprise at least one of a second number of times for transmitting ultrasound waves and a second line density;

wherein, the first number of times for transmitting ultrasound waves is greater than the second number of times for transmitting ultrasound waves, or the first line density is greater than the second line density.

11. The device of claim 9 , wherein, the second imaging mode is pre-configured with at least two frame rates and each of the at least two frame rates is pre-configured with a corresponding imaging parameter, and the second frame rate is determined from the at least two frame rates.

12. The device of claim 9 , wherein, the second imaging mode is pre-configured with at least two frame rates and an execution sequence of the at least two frame rates, wherein each frame rate is pre-configured with a corresponding imaging parameter and an imaging duration, and

the processor is further configured to:

receive a third instruction input by the user;

and wherein the processor is configured to:

sequentially transmit the second ultrasound waves in the second pulse repetition frequency to the target object and receive the second ultrasound echoes returned from the target object according to the execution sequence, the pre-configured imaging parameter and the imaging duration of a corresponding frame rate, in response to the third instruction to obtain the second ultrasound echo signals; and

sequentially generate contrast enhanced images according to the obtained second ultrasound echo signals.

13. The device of claim 8 , wherein the processor is further configured to:

receive a fourth instruction; and

stop transmitting ultrasound waves to the target object and receiving ultrasound echoes returned from the target object in response to the fourth instruction.