Ultrasonic diagnosis apparatus and displaying method

1. An ultrasonic diagnosis apparatus which generates, during a scanning process, a plurality of ultrasonic images by repeatedly scanning an interior of an object after injection of a contrast medium by using an ultrasonic wave, the apparatus comprising:

a display unit configured to display the ultrasonic images; and

processing circuitry configured to

compare, repeatedly during the scanning process, a signal or echo intensity of a cardiac chamber portion of an ultrasonic image with a signal or echo intensity of a myocardial portion of the ultrasonic image each time the signal or echo intensity of the cardiac chamber portion and the signal or echo intensity of the myocardial portion are obtained;

detect, during the scanning process, a time point at which the signal or echo intensity of the cardiac chamber portion changes from being higher than the signal or echo intensity of the myocardial portion to being lower than the signal or echo intensity of the myocardial portion;

track a contour of a specific region in the ultrasonic images, the tracking of the contour of the specific region being with respect to one of the ultrasonic images generated after the time point; and

cause the display to display, during the scanning process, a specific indication in response to detection of the time point.

2. The apparatus according to claim 1 , wherein the processing circuitry is further configured to compare an average signal or echo intensity of a cardiac chamber region of interest (ROI) of each ultrasonic image with an average signal or echo intensity of a myocardial ROI of each ultrasonic image.

3. The apparatus according to claim 2 , wherein the processing circuitry is further configured to set positions and sizes of the cardiac chamber ROI and the myocardial ROI in accordance with a specific ROI pattern selected from a plurality of ROI patterns.

4. The apparatus according to claim 3 , wherein the processing circuitry is further configured to select the specific ROI pattern based on a correlation between one of the ultrasonic images and a plurality of sampled ultrasonic images respectively corresponding to the plurality of ROI patterns.

5. The apparatus according to claim 3 , wherein the processing circuitry is further configured to change the positions and sizes of the cardiac chamber ROI and myocardial ROI in accordance with a cardiac phase.

6. The apparatus according to claim 1 , wherein the processing circuitry is further configured to generate indication data indicating that an image suitable for speckle tracking is acquired.

7. The apparatus according to claim 1 , wherein the processing circuitry is further configured to generate data for causing the display to display a message indicating that an image suitable for speckle tracking is acquired.

8. The apparatus according to claim 1 , wherein the processing circuitry is further configured to generate data for changing a color of a portion of each displayed ultrasonic image.

9. The apparatus according to claim 1 , further comprising an image memory,

wherein the processing circuitry is further configured to control the image memory to store at least one of the ultrasonic images generated after the time point.

10. The apparatus according to claim 1 , further comprising an image memory,

wherein the processing circuitry is further configured to control the image memory to store at least one of the ultrasonic images generated in a period between the time point and a time point occurring a predetermined time after the time point.

11. The apparatus according to claim 1 , wherein the processing circuitry is further configured to track the contour of the specific region with respect to one of the ultrasonic images generated in a period between the time point and a time point occurring a predetermined time from the time point.

12. The apparatus according to claim 1 , wherein the display is further configured to display an elapsed time from the time point.

13. The apparatus according to claim 1 , wherein the processing circuitry is further configured to stop the scanning process at a time point occurring a predetermined time from the time point.

14. The apparatus according to claim 1 , wherein the processing circuitry is further configured to measure an elapsed time from the time point.

15. The apparatus according to claim 14 , wherein the display is further configured to display the measured elapsed time.

16. A method for displaying a plurality of ultrasonic images generated, during a scanning process, by repeatedly scanning an interior of an object after injection of a contrast medium, the method comprising:

injecting a contrast medium into the object;

generating the plurality of ultrasonic images;

comparing, repeatedly during the scanning process, a signal or echo intensity of a cardiac chamber portion of the ultrasonic image with a signal or echo intensity of a myocardial portion of the ultrasonic image each time the signal or echo intensity of the cardiac chamber portion and the signal or echo intensity of the myocardial portion are obtained; and

detecting, during the scanning process, a time point at which the signal or echo intensity of the cardiac chamber portion changes from being higher than the signal or echo intensity of the myocardial portion to being lower than the signal or echo intensity of the myocardial portion;

tracking a contour of a specific region in the ultrasonic images, the tracking of the contour of the specific region being with respect to one of the ultrasonic images generated after the time point; and

displaying, during the scanning process, a specific indication in response to the detecting of the time point.

17. The method according to claim 16 , wherein the indication indicates that an ultrasonic image suitable for speckle tracking is acquired.

18. The method according to claim 16 , wherein the indication is represented by changing a color of a portion of the displayed ultrasonic image.

19. An ultrasonic diagnosis apparatus which generates, during a scanning process, a plurality of ultrasonic images by repeatedly scanning an interior of an object after injection of a contrast medium by using an ultrasonic wave, the apparatus comprising:

a display configured to display the ultrasonic images; and

processing circuitry configured to

compare, repeatedly during the scanning process, a signal or echo intensity of a cardiac chamber portion of an ultrasonic image with a signal or echo intensity of a myocardial portion of the ultrasonic image each time the signal or echo intensity of the cardiac chamber portion and the signal or echo intensity of the myocardial portion are obtained; and

detect, during the scanning process, a time point at which the signal or echo intensity of the cardiac chamber portion changes from being higher than the signal or echo intensity of the myocardial portion to being lower than the signal or echo intensity of the myocardial portion:

track a contour of a specific region in the ultrasonic images, the tracking of the contour of the specific region being with respect to one of the ultrasonic images generated after the time point; and

cause the display to display, during the scanning process, a specific indication at a timing when a time point at which the signal or echo intensity of the cardiac chamber portion changes from being higher than the signal or echo intensity of the myocardial portion to being lower than the signal or echo intensity of the myocardial portion,

wherein the indication is represented by changing a color of a portion of one of the displayed ultrasonic images.