Ultrasonic detection method and ultrasonic imaging system for fetal heart

An ultrasound imaging system, comprising:

• an ultrasound probe;
• a transmitting/receiving control circuit configured to control the ultrasound probe to transmit ultrasound waves to a tissue containing a fetal heart and receive ultrasound echoes to obtain ultrasound echo signals;
• a data processor configured to obtain a three-dimensional volume data according to the ultrasound echo signals, identify at least one point in the fetal heart in the three-dimensional volume data, identify a spatial position of a cross-section of the fetal heart in the three-dimensional volume data according to the point and obtain an image of the cross-section of the fetal heart from the three-dimensional volume data according to the identified spatial position;
• and
• a display configured to display the image of the cross-section of the fetal heart.