Method and apparatus of 2D sample volume based spectral Doppler imaging for motion tracking by using Neural Networks

摘要

The ultrasound imaging apparatus according to an embodiment of the present invention may include an ultrasound transceiving unit, a data acquisition unit, and a motion tracking unit. The ultrasound transceiving unit may focus and transmit a wide beam ultrasound signal to one line of the ultrasound image, and receive a received ultrasound signal reflected from an object to generate a 2D sample volume. The data acquisition unit may store received data corresponding to the received ultrasound signal, and provide IQ data corresponding to an Inphase component and a Quadrature component of the received data. The motion tracking unit may detect the motion of the object based on the correlation value between the 1D sample volume corresponding to the previous frame and the 2D sample volume corresponding to the current frame, and provide motion data. . The ultrasound imaging apparatus according to the present invention focuses on one line using all elements, transmits ultrasound, generates a two-dimensional sample volume through multi-beam reception beamforming, and a one-dimensional sample volume corresponding to the previous frame, and The movement of an object can be identified by detecting a correlation value between two-dimensional sample volumes corresponding to the current frame through a neural network. In the ultrasound imaging apparatus according to the present invention, by detecting the motion of an object based on a correlation value between a 1D sample volume and a 2D sample volume, negative effects of motions generated during a spectral Doppler scan can be reduced. , It is possible to improve the sensitivity and image quality of ultrasound images by tracking and compensating for movements occurring during scanning.