JPWO2019211171A5 - - Google Patents

Claims (12)

It ’s an ultrasonic system,
An ultrasonic transducer array that includes a plurality of transducer elements configured to fit the body of interest, wherein at least two ultrasonic transducer elements of the plurality of ultrasonic transducer elements are from regions of interest in different directions. With an ultrasonic transducer array, which acquires the ultrasonic signal of
It has a processor that receives an ultrasonic signal acquired by the ultrasonic transducer array.
The processor
Divide multiple ultrasonic signals based on the depth of the signal,
For each ultrasonic signal split, calculate the Doppler power and
For each ultrasonic signal, the depth of the fetal heartbeat was identified based on the Doppler power of the division of each ultrasonic signal.
Identify the fetal heart region based on the identified fetal heartbeat and the location of the at least two ultrasonic transducers.
Is configured to
Identifying the depth of the fetal heartbeat involves comparing the Doppler power to the threshold power.
Identifying the heartbeat depth of the fetus further comprises clustering the Doppler power values above the threshold power.
Ultrasonic system. The calculation of the Doppler power is based on the division of the ultrasonic signal, the Doppler signal is calculated, and the squared average value of the Doppler signal over a predetermined time period is calculated to calculate the Doppler power. The ultrasonic system described in. The ultrasonic system according to claim 2, wherein the time period is 1 second or longer. The ultrasonic system according to claim 1 , wherein the clustering is performed using a two-element Gaussian mixture model or a k-means clustering model. The ultrasonic system according to any one of claims 1 to 4 , wherein the processor further calculates a median fetal heart rate based on the fetal heart rate of the identified fetal heart rate. The ultrasonic system according to any one of claims 1 to 5 , wherein the system further comprises a display, wherein the display shows the user the heart area of the fetus. 6. The super, claim 6 , wherein the processor further determines the location of each ultrasonic signal division within the region of interest, and the display shows the fetal heart region in relation to each ultrasonic signal division. Sonic system. The ultrasonic system according to any one of claims 1 to 7 , wherein the ultrasonic transducer array further includes a sensor, and the processor determines the curvature of the ultrasonic transducer array based on the output of the sensor. The ultrasonic system of claim 8 , wherein the sensor comprises one or more of a strain gauge, an accelerometer, a piezoelectric sensor and a camera. The ultrasonic system according to any one of claims 1 to 9 , wherein the plurality of ultrasonic transducers have one or a plurality of piezoelectric transducers and CMUTs. In the ultrasonic imaging method,
The step of acquiring multiple ultrasonic signals using at least two ultrasonic transducers with different directions with respect to the region of interest.
The step of dividing the plurality of ultrasonic signals based on the signal depth, and
For each ultrasonic signal split, the step to calculate the Doppler power,
For each ultrasonic signal, a step of identifying the depth of the fetal heartbeat based on the Doppler power of the division of each ultrasonic signal,
The step of comparing the Doppler power with the threshold power,
A step of clustering the Doppler power value equal to or higher than the threshold power,
A method comprising the step of identifying a fetal heart region based on the identified fetal heartbeat and the position of the at least two ultrasonic transducers. A computer program having computer program code means configured to perform the method of claim 11 when executed on a computer.